The issues documented in this section have been reported after installing the recent updates listed below. We're investigating the issues and will update this page when a fix is available. In the meantime, please use the workarounds suggested for each issue.

VBScript does not run or you receive malicious code warning when using a custom form for Outlook [Fixed]

ISSUE
Last updated: Sep 17, 2017
Note: Please also see this article for an update on this issue: Custom form script is now disabled by default.
This issue affects Outlook 2007, Outlook 2010, Outlook 2013, and Outlook 2016.
When you use a custom form that you have created for Outlook, you see the following two symptoms:
STATUS
If you’re an Office 365 customer, the fix is now available to Insider Fast audience.
For other channels, an update is scheduled for mid-September, in versions 16.0.8418.5703 and later. We will update this page when the fix is released.
Issue is fixed for all MSI versions. For Outlook 2007, Outlook 2010, Outlook 2013 and Outlook 2016, install the updates below to fix the issue:

'Something went wrong..' or 'Search results may be incomplete' error when searching in Outlook [FIXED]

ISSUE
Last updated: August 3, 2017
This issue affects all Outlook versions on Windows 7, Windows 8, Windows 10.
When searching in Outlook, you get this error: “Something went wrong and your search couldn’t be completed.”, or 'Search results may be incomplete because items are still being indexed'.
And you'll see this Event Log warning:
STATUS: FIXED
Windows has released fixes via Windows Updates to address a reliability issue in Windows Search. Below are the relevant KB updates for each version:
Note:The fix for this issue has been released on June 27, 2017. If you implemented the workaround to disable Windows Desktop Search Service, you can now set the PreventIndexingOutlook registry key to DWORD: 0 to go back to using Windows Search.
WORKAROUND
If the issue is not resolved after installing the updates, please use the workaround below:
  1. If search is not working for Exchange accounts, delete the OST files which will cause a re-sync and re-index of the account:
    • OST files are typically stored at C:Users<your username>AppDataLocalMicrosoftOutlook.
    • To find the name and location of the OST file, click File, Account Settings, Account Settings, Data Files. Locate the correct email address, click on the name, and click Open File Location.
    • Before you can delete the OST file, you need to close Outlook so the process will release the file.
    • After deleting the file, restart Outlook and let the email sync again.
  2. Another workaround is to Create a new Outlook profile, and add your accounts to the new profile. We recommend keeping the old profile until you know you have moved over any local data or PST files.
Until you can install the Windows Update fix release, you can set a registry key that will cause Outlook to stop using the local Windows Search service. When this registry key is set, Outlook will use its own built-in search engine. The built-in search will display the message below to indicate it is not using the Windows Search service.
Disable Windows Desktop Search Service for Outlook:
Note: The following steps show you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Please make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see this article.
Detailed Instructions:
  1. Click Start, click Run, type regedit in the Open box, and then click OK.
  2. Locate and then click the following subkey in the registry:
    HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows
  3. On the Edit menu, point to New, and then click New Key and name the key Windows Search.
  4. Click on the new key Windows Search.
  5. On the Edit menu, point to New, and then click DWORD Value.
  6. Type PreventIndexingOutlook for the name of the DWORD, and then press Enter.
  7. Right-click PreventIndexingOutlook, and then click Modify.
  8. In the Value data box, type 1 to enable the registry entry, and then click OK.
  9. Note to disable the PreventIndexingOutlook setting, type 0 (zero), and then click OK.
  10. Exit Registry Editor, and then restart Outlook.

iCloud fails to load properly in Outlook 2007 [WORKAROUND]

ISSUE
iCloud fails to load properly in Outlook 2007, Outlook 2010, Outlook 2013 and Outlook 2016.
When accessing Calendar, Contacts, or Tasks, you get the following error:
The set of folders cannot be opened. MAPI was unable to load the information service C:PROGRA~2COMMON~1AppleInternet ServicesAPLZOD.dll. Be sure the service is correctly installed and configured.'
STATUS: WORKAROUND
The loading of unregistered MAPI services has been disabled by default to make Outlook more secure.
If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issue. For more information, see this page.
For Outlook 2007, use the workaround below:
Warning: This workaround may make your computer or your network more vulnerable to attack by malicious users or by malicious software such as viruses. Microsoft does not recommend this workaround but is providing this information so that you can choose to implement this workaround at your own discretion. Use this workaround at your own risk.
If you have trusted applications that depend on being loaded in this manner, you can re-enable those applications by setting the following registry key:
REG_DWORD HKEY_CURRENT_USERSoftwareMicrosoftOffice12.0OutlookSecurityAllowUnregisteredMapiServices
You can use the following registry subkey to apply the registry setting as a domain policy:
HKCUSoftwarePoliciesMicrosoftOffice12.0OutlookSecurityAllowUnregisteredMapiServices
Value 0 (default): Block loading of unregistered MAPI services. This is the recommended setting to avoid unexpected execution of unknown code.
Value 1: Enable loading of unregistered MAPI services.
Important: The following steps show you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Please make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see this article.
To make these registry changes, follow these steps:
  1. Click Start, click Run, type regedit in the Open box, and then click OK.
  2. Locate and then click the following subkey in the registry:
    HKCUSoftwareMicrosoftOffice12.0OutlookSecurity
  3. On the Edit menu, point to New, and then click DWORD Value.
  4. Type AllowUnregisteredMapiServices for the name of the DWORD, and then press Enter.
  5. Right-click AllowUnregisteredMapiServices, and then click Modify.
  6. In the Value data box, type 1 to enable the registry entry, and then click OK.
    Note: To disable the AllowUnregisteredMapiServices setting, type 0 (zero), and then click OK.
  7. Exit Registry Editor, and then restart the computer.
Vulnerability information (applies to all versions)
MAPI does not validate that a provider’s DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated. This can allow arbitrary code execution to occur.

Some Web-based Outlook add-ins don't work in when using on premise Exchange 2013

Last updated: July 26, 2017
ISSUE
Some Web-based Outlook add-ins don't work in Outlook when using on premise Microsoft Exchange 2013.
This only applies to the MSI installations of Outlook 2016/Office 2016. Click-2-Run installations are not affected. The Office App add-in may show an Operation Failed error or seem to not respond to button presses or other UI choices.
Status: Investigating
We're investigating the issue and will update this page when a fix is available.

Outlook crashes after choosing File > Options and prompts to install Outlook again [FIXED]

Last updated: November 29, 2017
ISSUE
Outlook crashes when you click File > Options, and you see the error below.
This issue only affects First Release for Deferred Channel Version 16.0.8201.2158.
Crash details:
Faulting application name: OUTLOOK.EXE, version: 16.0.8201.2158, time stamp: 0x5975d6bc
Faulting module name: KERNELBASE.dll, version: 6.1.7601.23807, time stamp: 0x5915fe14
Exception code: 0xc06d007f
Fault offset: 0x000000000001a06d
Faulting process id: 0x11fc
Faulting application start time: 0x01d307f0bc63afda
Faulting application path: C:Program FilesMicrosoft OfficerootOffice16OUTLOOK.EXE
Faulting module path: C:windowssystem32KERNELBASE.dll
STATUS: FIXED
This issue is fixed in Semi-Annual Channel (formerly First Release for Deferred Channel) build 8201.2162 released in August 2017.
This issue is also fixed in Deferred Channel build 8201.2209 released in November 2017.
For more information about when builds are available for their respective channels, go to Update history for Office 365.

Outlook crashes and slow performance

Outlook

Outlook crashes after choosing File > Options and prompts to install Outlook again [WORKAROUND]

Last updated: November 29, 2017
ISSUE
Outlook crashes when you click File > Options, and you see the error below.
This issue only affects First Release for Deferred Channel Version 16.0.8201.2158.
Crash details:
Faulting application name: OUTLOOK.EXE, version: 16.0.8201.2158, time stamp: 0x5975d6bc
Faulting module name: KERNELBASE.dll, version: 6.1.7601.23807, time stamp: 0x5915fe14
Exception code: 0xc06d007f
Fault offset: 0x000000000001a06d
Faulting process id: 0x11fc
Faulting application start time: 0x01d307f0bc63afda
Faulting application path: C:Program FilesMicrosoft OfficerootOffice16OUTLOOK.EXE
Faulting module path: C:windowssystem32KERNELBASE.dll
STATUS: FIXED
This issue is fixed in Semi-Annual Channel (formerly First Release for Deferred Channel) build 8201.2162 released in August 2017.
This issue is also fixed in Deferred Channel build 8201.2209 released in November 2017.
For more information about when builds are available for their respective channels, go to Update history for Office 365.

Windows Command prompt running OfficeBackgroundHandlerRegistration task flashes every hour [FIXED]

Last updated: June 7, 2017
ISSUE
After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running.
STATUS: FIXED
This issue is now fixed in Version 1705 (Build 8201.2075). To get the update Office, open any Office 2016 app and choose File > Account > Update Options > Update.

Outlook for Windows hangs when previewing Excel files attached to email [FIXED]

Last updated: Oct 20, 2017
ISSUE
Outlook 2016 freezes when you try to preview an Excel file that’s attached to an email.
Fixed
Please install the Windows 10 Fall Creators Update to fix this issue.

Other Outlook issues affecting email messages, attachments, and features

Unable to create second profile with different account on ADAL enabled tenant. [WORKAROUND]

Last Updated: March 9, 2018
ISSUE
When you try to configure a secondary account from the same Office 365 tenant in Outlook 2016 (Current Channel) with ADAL enabled, you receive the following error: 'An encrypted connection to your mail server is not available. Click Next to attempt using an unencrypted connection.'
STATUS: FIXED
This issue is fixed in Office Insider Build 16.0.9124.2004 and higher. The fix will be available for Monthly Channel versions later in March.
The fix is currently only available in Insider build 16.0.9124.2004 and higher. It will eventually be made available to Monthly Channel versions later in March. For Semi-Annual Channel and Semi-Annual Channel (Targeted) versions, please disable ADAL on the client as a workaround. To do this, follow these steps to Disable modern authentication on devices.
You can also start Outlook using the /profiles switch and create the profile. To do this:
  1. Right-click the Windows Start menu and choose Run.
  2. Type Outlook.exe /profiles and press OK. Manual de proyector boxlight dx25nu 12.
  3. When Outlook starts, click New in the Choose Profile window to create a new profile.

Some Junk Mail goes to Inbox after configuring Junk Email Options to “Safe Lists Only” [FIXED]

Last updated: March 1, 2018
ISSUE
For IMAP and POP accounts, if you configure the Junk Email Options to Safe Lists Only, and send multiple emails from an unsafe email account afterwards – the initial email will go to Junk Mail, the rest will continue to arrive in your Inbox.
STATUS: FIXED
The issue is fixed in Monthly Channel Version 1709 (Build 8528.2139). To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.

All Mail and Unread Mail tab options no longer show in Outlook [WORKAROUND]

Last updated: June, 5 2017
ISSUE
You may notice that All, Unread , Mentioned and other sort and filtering options, such as By date, and Newest are missing in Outlook above your email list.
If your Outlook version is 1703 (Build 7967.2161) or higher, the filters and sort options were moved under the All drop down menu, to accommodate space for the new Focused inbox.
Note: If you don't know your Outlook version, go to File > Office Account to check your Outlook version.
How to filter and sort your mail
To sort your emails by Unread, Mentioned or use other filters, select the All button and choose one of the options. You can also select Arrange By and then pick one of the options such as Date, From, etc.
Another options is to use the Filter Email button on the ribbon. For more information, see Filter email messages.
Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers.
Use the Quick Access Toolbar
To access the filtering options faster, add them to your Quick Access Toolbar.
For example, to add Unread to the Quick Access Toolbar:
  1. Click anywhere in the Search box.
  2. When the Search tab commands become available on the toolbar, right-click the Unread icon, and then select Add to Quick Access Toolbar.
To add Arrange by to your Quick Access Toolbar, you need to add it to the ribbon first:
  1. Right click the Ribbon and click Customize the Ribbon.
  2. Under the Customize the Ribbon Main Tabs , click the Home (Mail) > New Group.
  3. Select Rename, and rename the new group to Arrange.
  4. In the Choose commands from column, select All Commands.
  5. Scroll down to Arrange By, select the third Arrange By and click Add.
  6. Click the name of the new group (Arrange By) under Customize the Ribbon, and click the UP arrow to move it under the Respond group. You can change this later if you want to move it somewhere else.
  7. Click OK. This will add the new group on the Ribbon.
  8. To add Arrange by to your Quick Access Toolbar, right click on the new Arrange By button and click Add to Quick Access Toolbar.
For more information, see Add a command to the Quick Access Toolbar
There is currently no option to revert to the prior behavior, but we would love to hear your feedback to help us with future designs . Please visit the Outlook User Voice page, and let us know what you think of these options.

Meeting invitations are automatically forwarded by an attendee [FIXED]

Last updated: August, 18 2017
ISSUE
Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite. This happens to accounts that are configured in the iOS Mail app.
Status: FIXED
This issue is fixed. Please install the latest updates on your phone to resolve the issue.

You may not be able to edit shared calendars [FIXED]

Last updated: Sep 19, 2017
ISSUE
Customers on Current Channel major version 16.0.8326.2062 are not able to edit shared calendars.
You might see the following error when trying to edit or add a new item on the calendar:
You don’t have permission to create an entry in this folder. Right-click the folder, and then click Properties to check your permissions for the folder. See the folder owner or your administrator to change your permissions.
If you right-click the shared folder to check permissions, you see the following error:
Cannot display the folder properties. The folder may have been deleted or the server where the folder is stored may be unavailable. Cannot display folder properties. You don’t have appropriate permission to perform this operation.
Status: Fixed
The fix for this issue is being released in build 16.0.8431.2079. To install the update immediately, please go to File > Office Account > Update Options > Update Now.

Outlook 2016 issues with scrolling [PARTIAL FIX/WORKAROUND]

Last updated: August 24, 2017
ISSUE
In Outlook 2016, you may experience the following scrolling problems:
See Version and build numbers of update channel releases.
STATUS
WORKAROUND
For Current Channel, set these two registry keys that will disable the flight that is causing the scrolling issue:
HKEY_CURRENT_USERSOFTWAREWow6432NodeMicrosoftOffice16.0CommonExperimentEcsOverrides
DWORD: ofsatqrgsry3ri0
Value: 0
HKEY_CURRENT_USERSOFTWAREMicrosoftOffice16.0CommonExperimentEcsOverrides
DWORD: ofsatqrgsry3ri0
Value: 0
Or you can open Notepad and paste the text below and save the file as .reg extension and then double click the file to import it into the registry:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USERSOFTWAREWow6432NodeMicrosoftOffice16.0CommonExperimentEcsOverrides]
'ofsatqrgsry3ri0'=dword:00000000
[HKEY_CURRENT_USERSOFTWAREMicrosoftOffice16.0CommonExperimentEcsOverrides]
'ofsatqrgsry3ri0'=dword:00000000

Outlook 2007 and Outlook 2010 display wrong languages [FIXED]

Last updated: Sep 19, 2017
ISSUE
After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface.
Customers using the language in the first column may see parts of the page in the language listed in the second column:
Arabic
Swedish
Bulgarian
Brazilian Portuguese
Catalan
Brazilian Portuguese
Czech
Swedish
Hungarian
Swedish
Italian
Brazilian Portuguese
Kazakh
Brazilian Portuguese
Korean
Brazilian Portuguese
Latvian
Swedish
Norwegian
Swedish
Dutch
Swedish
Portuguese
Brazilian Portuguese
Slovenian
Swedish
Serbian Latin
Swedish
Thai
Chinese Traditional Taiwan
Turkish
Chinese Traditional Taiwan
STATUS: Fixed
This issue is fixed now.
Please follow the instructions in KB 4011086 to uninstall it, and then install KB 4011110.

Automated troubleshooting tools

A tool available to Office 365 for business subscribers, the Support and Recovery Assistant for Office 365 will run a series of diagnostic tests on your computer and help you set up a new profile, or resolve other issues. If any of the tests fails, it will provide suggested solutions to get your problem solved.
Note: Support and Recovery Assistant for Office 365 is currently only available for use by Office 365 customers.
CalCheck checks your Outlook calendar or general settings for problems, such as permissions, free/busy publishing, delegate configuration, and automatic booking. It also checks each item in your calendar folder for known problems that can cause unexpected behavior, such as meetings that seem to be missing.

Need more help?

Talk to support.
If you have an Office 365 for home subscription, or you purchased a one-time download of Office 2016, click the Contact Uslink at the bottom of this page.
Ask the community
Get help from experts in our forums:
Office on Windows forum for personal, home, or university users
Office 365 community forum for business users
Provide feedback in Office app
You can send feedback directly to our Office teams:.
In Office 2016 on Windows 10, open an Office app, and click File > Feedback.

Have a feature request?

We love reading your suggestions on new features and feedback about how you use our products! Share your thoughts on the Outlook UserVoice site. We’re listening.

Last updated: June, 2019

For issues that are not covered on this page, we have multiple tools to help you automatically diagnose and fix a range of Outlook problems. Check out this article: Resolve Outlook for Windows issues with automated troubleshooting tools

Jump to each section on this page for specific Outlook issue:

Outlook known issues in the June 2019 updates

Outlook known issues in the May 2019 updates

Outlook known issues in the March 2019 updates

Outlook known issues in the January 2019 updates

Outlook known issues in the December 2018 updates

Outlook known issues in the November 2018 updates

Outlook known issues in the October 2018 updates

Outlook known issues in the September 2018 updates

Outlook known issues in the June 2018 updates

Outlook known issues in the March 2018 updates

Outlook hangs when clicking in Conversation History folder [WORKAROUND]

Last Updated: April 19, 2018
ISSUE
When clicking on items in the Conversation History folder, Outlook may hang or display the 'Not responding' message.
This issue may also occur when clicking on Skype items and email voice mails.
STATUS: WORKAROUND
For more information on this issue, please go to Outlook hangs when clicking in Conversation History folder.

Free / Busy shows slashed lines in Scheduling Assistant [WORKAROUND]

Last Updated: April 6, 2018
ISSUE
When an on-premise Outlook user opens the Scheduling Assistant to book a meeting, cloud users Free/Busy shows as slashed lines.
This will normally occur if the user added to the meeting has time blocked on their calendar with availability as Working Elsewhere.
STATUS: WORKAROUND
Until a fix is available, you can use Outlook Web App (OWA) to schedule the meeting as a workaround or you can ask the user with Working Elsewhere availability to switch it to Free or Busy.
For more information on this issue, please go to Free/Busy shows slashed lines in Scheduling Assistant.

Meeting updates are automatically sent without prompts after updating to Version 1802 (Build 9029.2167) [FIXED]

Last Updated: May 10, 2018
ISSUE
Starting with Version 1802 (Build 9029.2167) Outlook introduced an update that treats changes to a meeting’s attachments, subject, and body as updates which must be sent to all attendees. Based on customer feedback, Outlook will remove body changes from triggering updates to all attendees.
STATUS: FIXED
Fix and workaround steps for this issue can be found in the following article: Outlook unexpectedly stops prompting and automatically sends Meeting updates to all attendees

Meeting location updates are not reflected in recipient calendar [FIXED]

Last updated: March 14, 2018
ISSUE
After updating to Version 1803 (Build 9126.2072), you may find that when you open an existing meeting in the calendar and send an update with updated location, the recipient still sees the old location. If you review the item in the Sent Items folder it shows the old location and was not updated.
Note: This issue only affects Semi-Annual Channel (Targeted) and Monthly Channel (Targeted) versions using builds 9126.2072 and higher.
STATUS: FIXED
This issue is fixed by a change in the service. Restarting Outlook should fix the issue but you may have to restart Outlook up to three times to pick up the change.
Information for this issue is also provided in this article: Meeting location updates are not reflected in recipient calendar in Outlook 2016.

Outlook known issues in the Feb 2018 updates

Outlook sends blank emails [FIXED]

Last updated: March 9, 2018
ISSUE
When you send emails you may find that the email appears blank. This issue happens most often with add-ins that leverage the Send To Mail Recipient functionality and MAPI integration.
STATUS: FIXED
This issue is fixed in Monthly Channel Version 1802 (Build 9029.XXXX) or higher. To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.
Information for this issue is also provided in Outlook sends blank emails.

Printing a calendar switched from color to black and white [FIXED]

Last updated: February 20, 2018
ISSUE
When you print your calendar you find that it switched from printing in color to black and white. The issue occurs on Outlook 2016 version 8901.xxxx and higher.
This issue occurs because the Outlook team fixed a bug to respect the setting 'Print using grey shading'.
STATUS: FIXED
To print the calendar in color, disable the 'Print using grey shading' setting in Page Setup under Print Options. Full steps can be found in the following article: Outlook 2016 calendar printing switched from color to black and white.

Outlook freezes clicking the Signature button [WORKAROUND]

Last updated: February 12, 2018
ISSUE
When you click the Signature button, Outlook hangs and you are not able to add a signature.
This issue occurs if you install and Office subscription on a PC that pre-installed Microsoft Office desktop apps.
STATUS: WORKAROUND
To workaround this issue uninstall the pre-installed Microsoft Office Desktop Apps. Workaround steps for this issue can be found in the following article: Outlook freezes clicking the Signature button

Outlook known issues in the Jan 2018 updates

Search, MailTips, and Free/Busy do not work for some users [FIXED]

Last updated: May 1, 2018
ISSUE
You may be unable to search or cannot see MailTips or Free/Busy.
This issue occurs in Build 8420.xxxx and higher.
STATUS: FIXED (for Monthly Channel) / WORKAROUND (for Semi Annual Channel)
Fix and workaround steps for this issue can be found in the following article: Search, MailTips, and Free/Busy do not work for some Office 365 users

Calendar overlay does not show appointments for additional account [FIXED]

Last updated: January 31, 2018
ISSUE
When you view multiple calendars at the same time and stack them on top of one another in an overlay view, you can't view appointments from the other accounts.
This issue started in Version 1712 (Build 8827.2148).
STATUS: FIXED
The issue is fixed in Monthly Channel Version 1712 (Build 8827.2179). To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.
Information for this issue is also provided in Calendar overlay does not show appointments for additional account.

Missing meeting location after adding new users to the meeting [FIXED]

Last updated: January 24, 2018
ISSUE
When you add new users to an existing meeting and choose Send updates only to added or deleted attendees the meeting location is not preserved.
STATUS: FIXED
Information for this issue is also provided in Missing meeting location after adding new users to the meeting.

To-Do Bar and Task List view not displaying events [FIXED]

Last updated: January 17, 2018
ISSUE
If you have two different Exchange accounts (including Outlook.com) in your Outlook 2016 profile, and you mark emails for follow up on both mailboxes, the subjects and details of the emails are not visible in the To-Do Bar or the Tasks View.
STATUS: FIXED
The issue is fixed in Monthly Channel Version 1712 (Build 8827.2179). To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.
Information for this issue is also provided in To-Do Bar and Task List view not displaying events.

Attachments are removed when forwarding plain text emails [FIXED]

Last updated: January 24, 2018
ISSUE
After installing the January Update for MSI versions of Outlook, attachments are removed when forwarding emails in plain text.
STATUS: FIXED
To fix this issue, please download update 4011123 from the download center.
Information for this issue is also provided in Attachments are removed when forwarding plain text emails.

No Search results found when using All Mailboxes [FIXED]

Last updated: January 31, 2018
ISSUE
After updating Outlook or Office to version 16.0.8827.2062, searching using the All Mailboxes option shows no results.
STATUS: FIXED
The issue is fixed in Monthly Channel Version 1712 (Build 8827.2179). To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.
Information for this issue is also provided in No Search results found when using All Mailboxes.

Find Related option does not show results [FIXED]

Last updated: January 31, 2018
ISSUE
After updating Outlook or Office to version 16.0.8827.2062, searching using Find Related option shows no results.
STATUS: FIXED
The issue is fixed in Monthly Channel Version 1712 (Build 8827.2179). To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.
Information for this issue is also provided in Find Related option does not show results

Outlook 2010 will not start on WinXP after January updates [FIXED]

Last updated: February 27, 2018
ISSUE
After updating Outlook 2010 on Windows XP to the January Update, Outlook fails to start with the error: 'Outlook.exe-Entry Point not found. The procedure entry point CompareStringOrdinal could not be located in the dynamic link library KERNEL32.dll'.
STATUS: FIXED
Microsoft has released KB 4018314 to fix the issue. The fix will also be released by a scheduled monthly update planned for March 6th.

Outlook known issues in the Nov 2017 updates

Contact Groups are not searchable with Autocomplete - [WORKAROUND]

Last updated: December 4, 2017
ISSUE
After updating Outlook 2016 to Build 8625.2121 or higher, local contact groups do not auto-resolve with Autocomplete.
STATUS: WORKAROUND
Our engineering team is aware of this issue and working on a fix that should be available soon. For the most recent information on this issue, go to Contact Groups are not searchable with Autocomplete.

Outlook 2016 View Settings button is missing [WORKAROUND]

Last updated: November 3, 2017
ISSUE
After updating to the Monthly Channel Version 1710 (8625.2121) build or higher, the View Settings button is missing.
STATUS: WORKAROUND
For the most recent information on this issue, go to Missing View Settings button in Outlook 2016.

Outlook known issues in the Oct 2017 updates

Outlook Home Page feature is missing in folder properties [WORKAROUND]

Last updated: Oct 25, 2017
ISSUE
After installing the October Public Update, folder home pages no longer appear and the Home Page feature is missing in Outlook folder properties. This feature was disabled by default to limit security vulnerabilities.
This affects Outlook 2010, Outlook 2013, and Outlook 2016.
STATUS: WORKAROUND
For the most recent information, go to Outlook Home Page feature is missing in folder properties.

Outlook 2016 prompts for credentials after disabling Modern Authentication [WORKAROUND]

Last Updated: October 26, 2017
ISSUE
After Modern Authentication is disabled, users may intermittently get prompted for their credentials in Outlook 2016 and have to repeatedly enter their username and password.
Note: Fiddler traces reveal 401/403 authentication failures to this endpoint: 'https://outlook.office.com/api/v2.0/Me/InferenceClassification'
This scenario can occur if Focused Inbox and Modern Authentication for the tenant is turned on and then Modern Authentication is turned off. When this happens, Focused Inbox has already started working and keeps trying to connect resulting in these credential prompts.
STATUS: WORKAROUND
For the most recent information, go to Outlook 2016 prompts for credentials after disabling Modern Authentication.

'Business Contact Manager for Outlook could not complete your last action or actions' error in Outlook 2010 or 2013 [WORKAROUND]

Last Updated: October 16, 2017
ISSUE
After installing the October Public Update for Outlook 2010 or Outlook 2013, you may get this error in the folder pane display when you click on folders in the Business Contact Manager pane: We didn't find anything to show here. Additionally, an error dialog appears with this error: Business Contact Manager for Outlook could not complete your last action or actions. Please try again.
STATUS: WORKAROUND
For the most recent information on this issue, go to 'Business Contact Manager could not complete your last action or actions' error in Outlook 2010 or 2013.

Outlook known issues in the Sep 2017 updates

Outlook 2007 displays wrong languages [FIXED]

Last updated: Sep 19, 2017
ISSUE
After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface.
Customers using the language in the first column may see parts of the page in the language listed in the second column:
Arabic
Swedish
Bulgarian
Brazilian Portuguese
Catalan
Brazilian Portuguese
Czech
Swedish
Hungarian
Swedish
Italian
Brazilian Portuguese
Kazakh
Brazilian Portuguese
Korean
Brazilian Portuguese
Latvian
Swedish
Norwegian
Swedish
Dutch
Swedish
Portuguese
Brazilian Portuguese
Slovenian
Swedish
Serbian Latin
Swedish
Thai
Chinese Traditional Taiwan
Turkish
Chinese Traditional Taiwan
STATUS: Fixed
This issue is fixed now.
Please follow the instructions in KB 4011086 to uninstall it, and then install KB 4011110.

Custom form script is now disabled by default

Last updated: Oct 13, 2017
ISSUE
Custom form script is now disabled by default and requires setting registry keys to re-enable it.
  1. The new registry key has a default value of 1, which indicates form script should not run.
    First create this key:
    32 bit Office on 64 bit Windows
    HKEY_LOCAL_MACHINESOFTWAREWOW6432NodeMicrosoftOffice16.0OutlookSecurity
    32 bit Office on 32 bit Windows or 64 bit Office on 64 bit Windows
    HKEY_LOCAL_MACHINESOFTWAREMicrosoftOffice16.0OutlookSecurity
    Then create DWORD (32-bit) Value 0 and set the name to DisableCustomFormItemScript to enable custom form scripts.
  2. Once custom form scripts have been enabled at all, they must then be enabled per form message class. For instance, if you have a form with the message class IPM.Note.Custom, we must register “IPM.Note.Custom” as a trusted form message class. To do this, first create this key:
    32 bit Office on 64 bit Windows
    HKEY_LOCAL_MACHINESOFTWAREWOW6432NodeMicrosoftOffice16.0OutlookFormsTrustedFormScriptList
    32 bit Office on 32 bit Windows or 64 bit Office on 64 bit Windows
    HKEY_LOCAL_MACHINESOFTWAREMicrosoftOffice16.0OutlookFormsTrustedFormScriptList
Then, create REG_SZ values in this key for each form you wish to allow scripts to run. In the above example, you would create a REG_SZ value named “IPM.Note.Custom” with empty data.
When designing a form, Run This Form will run a form using the message class of the base form. So if you started designing an IPM.Note form and want to Run This Form, you will need to have IPM.Note registered. After you publish, the published message class is what will be checked. Once you have finished designing your form and published it to a custom form name, remove the standard “IPM.Note” from the trusted list.
Notes:
After making the above changes the registry keys will look like the following:
[HKEY_LOCAL_MACHINESOFTWAREWOW6432NodeMicrosoftOffice16.0OutlookSecurity]
DisableCustomFormItemScript'=dword:00000000
[HKEY_LOCAL_MACHINESOFTWAREWOW6432NodeMicrosoftOffice16.0OutlookFormsTrustedFormScriptList]
'IPM.Note.Custom'='
'IPM.Note'='
NOTE: In some cases forms in secondary mailboxes and Public folders still don't work after the registry key settings. To fix this, enable scripts in the Trust Center:
  1. Click File > Options. Then select Trust Center > Trust Center Settings > Email Security.
  2. Under the Script in Folders section, click the checkbox for Allow script in shared folders and Allow script in Public folders and click OK and OK again to close out the windows.
STATUS
The change was first introduced in the September 12th, 2017 Outlook Public Updates and is included in the following MSI updates which now require the registry keys.
Click to Run status is as follows:
  1. Monthly Channel (Current Channel) will start supporting the registry keys in the update scheduled for September 18th release build 16.0.8431.2079.
  2. Semi-Annual Channel (FRDC) supports the registry keys with build 16.0.8431.2079.
  3. Deferred Channel supports the registry keys with build 16.0.8201.2193.
  4. Deferred Extended status is TBD.
  5. Insider Fast status is TBD.
  6. Insider Slow supports the registry keys with build 16.0.8431.2079.

Can't open Enterprise Vault items

Last Updated: October 13, 2017
ISSUE
This occurs because custom form script is now disabled by default.
STATUS: WORKAROUND
Please follow the steps provided in Issue #2: Custom form script is now disabled by default which is just above this issue.

Important Announcement about Outlook.com

Reconnect Outlook 2016 or Outlook 2013 to Outlook.com for uninterrupted email access

ACTION REQUIRED: Reconnect Outlook 2016 or Outlook 2013 to Outlook.com for uninterrupted email access
Earlier this year we introduced the new Outlook.com, which helps you focus on what matters, collaborate effortlessly, and get more done. As part of the upgrade, we are also moving accounts to a more secure and reliable infrastructure. The upgrade impacts all Outlook, Hotmail, Live, or MSN email accounts.
Once your Outlook.com account has been upgraded, you’ll need to reconnect Outlook 2016 or Outlook 2013 to your Outlook.com account to ensure the best experience and fix issues. To check if your account has been upgraded, login to your account through a web browser and compare your mailbox with the images below.
Mailbox Pre-Upgrade
Mailbox Post-Upgrade
If you do not reconnect your upgraded email account, you will soon no longer be able to send or receive Outlook.com emails via your desktop version of Outlook 2016 and 2013 until you reconnect. Additionally, by not reconnecting, you may experience email and calendar sync issues that will be resolved once you reconnect. You will still be able to send and receive emails via the web on www.Outlook.com.
For detailed instructions and help on how to reconnect your account, please visit this article.
Note: This change only affects any Outlook.com accounts you are accessing via Outlook 2016 or Outlook 2013. You do not need to reconnect to your other email accounts, such as Office 365, Exchange, or other third party email accounts. You can also continue to send, receive, and access email from your Outlook.com account on the web via any popular web browser.

Outlook issues after connecting Outlook to Outlook.com

Outlook.com email account appears as 'outlook_[long series of letters and numbers]@outlook.com' in Outlook for Windows [WORKAROUND]

ISSUE
After connecting to Outlook for Windows (Outlook 2016, 2013, 2010 versions) to your Outlook.com email account, your may experience the following:
This issue only impacts customers using Outlook for Windows. Emails sent via Outlook.com on the web works correctly and emails will be sent with the correct email address.
STATUS
The Outlook client does not currently support using a non Microsoft domain primary alias. For the time being to get the account to work in Outlook you need to change the primary alias to a Microsoft domain account, such as @outlook.com or @hotmail.com. The Outlook Team is doing work that will enable some supported use of aliases in the near future. We will update this topic as soon as the functionality is available.
WORKAROUND
This issue occurs for users with multiple account aliases. We are actively working on a fix. In the meantime, to fix this issue, please do the following:
Note: If you do not have another alias, click the link on the page to create one 'Click Add email and a new alias'. Then choose the option 'Create a new email address and add it as an alias'
  1. Go to https://account.live.com/names/Manage and sign in to your Outlook.com account.
  2. Set your Outlook.com email as the primary alias.
  3. In Outlook for Windows, remove and re-add the account. See the steps in this article: Add your Outlook.com account in Outlook for Windows

Sending an email from an Outlook.com connected account, Outlook sends the email as 'On behalf of' your Outlook.com account [WORKAROUND]

Last updated: February 8, 2017
ISSUE
If Outlook is connected to a primary Outlook.com account that is also connected to other secondary non-Microsoft accounts (such as Gmail, Yahoo, etc.), when sending an email in Outlook, you are not able to choose the other secondary connected account as the 'From' sending account.
If you manually type in the secondary connected account email address in the 'From' field, the email is sent as 'On behalf of' your primary Outlook.com account.
STATUS: WORKAROUND
Outlook supports sending from a secondary connected account for Microsoft owned domains such as @outlook.com, @live.com, @hotmail.com but has not implemented this functionality for third-party domains.
The Outlook team is listening to your feedback and investigating adding this functionality to future updates. Please vote up the request and add any feedback on UserVoice: Option to make Microsoft Outlook 2016 work with Outlook.com connected. In the meantime, please use the following workaround:
WORKAROUND
You can also add the secondary connected accounts (Gmail, Yahoo, etc.) in Outlook.com as additional accounts in the Outlook profile.
  1. In Outlook, choose the File tab.
  2. Under Account Information, choose Add Account.
  3. On the Auto Account Setup page, enter your name, email address, and password, and then choose Next.
    Note: If you receive an error message after choosing Next, double check your email address and password. If both are correct, see the next section.
  4. Choose Finish.
For more information, please see Outlook email setup.

Unable to configure Custom Domains accounts to connect in Outlook as an Exchange account [WORKAROUND]

Last updated: January 24, 2017
ISSUE
When connecting in Outlook as an Exchange account, you are unable to configure your personal custom domain email account.
WORKAROUND
  1. Add a CNAME record to your DNS settings at your domain registrar. A CNAME record is needed for Outlook to configure the account using Autodiscover. The only record you need to add is for Host Autodiscover.
    Record type
    Host
    Points to
    TTL
    CNAME (Alias)
    autodiscover
    autodiscover.outlook.com
    1 hour
  2. Verify your MX record is still configured for Hotmail. An MX record ensures you can receive email from other people.
    When you originally setup your Domain settings for Outlook.com an MX record was added to your DNS settings. This record has some unique numbers and/or letters followed by *.pamx1.hotmail.com and it needs to be preserved. You can confirm the MX record is still configured properly by looking up your domain at https://mxtoolbox.com. This record should be listed before any other MX records for this domain. For example, this is what it should look like on https://mxtoolbox.com:
    Pref
    Hostname
    IP Address
    TTL
    10
    60 min

Cannot edit the shared Outlook.com calendar in Outlook 2016 [WORKAROUND]

Last updated: May 2, 2017
Currently, you can't use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you've reconnected your Outlook.com account to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows.
To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. Read how to Add your Outlook.com account to another mail app.

Error when sharing a calendar from Outlook.com personal or home account to an Office 365 business account [WORKAROUND]

Last updated: May 2, 2017
ISSUE
When you try to accept a shared Outlook.com calendar using your Office 365 for business account in Outlook 2016, you might receive the 'Something went wrong' error or your sign-in might fail.
STATUS: WORKAROUND
To access the calendar shared with your Office 365 for business account, you’ll need to accept the invitation from Outlook on the web, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation.

Outlook known issues in the June 2017 security updates

Last updated: July 11, 2017

The issues documented in this section have been reported after installing the recent updates listed below. We're investigating the issues and will update this page when a fix is available. In the meantime, please use the workarounds suggested for each issue.

VBScript does not run or you receive malicious code warning when using a custom form for Outlook [Fixed]

ISSUE
Last updated: Sep 17, 2017
Note: Please also see this article for an update on this issue: Custom form script is now disabled by default.
This issue affects Outlook 2007, Outlook 2010, Outlook 2013, and Outlook 2016.
When you use a custom form that you have created for Outlook, you see the following two symptoms:
STATUS
If you’re an Office 365 customer, the fix is now available to Insider Fast audience.
For other channels, an update is scheduled for mid-September, in versions 16.0.8418.5703 and later. We will update this page when the fix is released.
Issue is fixed for all MSI versions. For Outlook 2007, Outlook 2010, Outlook 2013 and Outlook 2016, install the updates below to fix the issue:

'Something went wrong..' or 'Search results may be incomplete' error when searching in Outlook [FIXED]

ISSUE
Last updated: August 3, 2017
This issue affects all Outlook versions on Windows 7, Windows 8, Windows 10.
When searching in Outlook, you get this error: “Something went wrong and your search couldn’t be completed.”, or 'Search results may be incomplete because items are still being indexed'.
And you'll see this Event Log warning:
STATUS: FIXED
Windows has released fixes via Windows Updates to address a reliability issue in Windows Search. Below are the relevant KB updates for each version:
Note:The fix for this issue has been released on June 27, 2017. If you implemented the workaround to disable Windows Desktop Search Service, you can now set the PreventIndexingOutlook registry key to DWORD: 0 to go back to using Windows Search.
WORKAROUND
If the issue is not resolved after installing the updates, please use the workaround below:
  1. If search is not working for Exchange accounts, delete the OST files which will cause a re-sync and re-index of the account:
  2. Another workaround is to Create a new Outlook profile, and add your accounts to the new profile. We recommend keeping the old profile until you know you have moved over any local data or PST files.
Until you can install the Windows Update fix release, you can set a registry key that will cause Outlook to stop using the local Windows Search service. When this registry key is set, Outlook will use its own built-in search engine. The built-in search will display the message below to indicate it is not using the Windows Search service.
Disable Windows Desktop Search Service for Outlook:
Note: The following steps show you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Please make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see this article.
Detailed Instructions:
  1. Click Start, click Run, type regedit in the Open box, and then click OK.
  2. Locate and then click the following subkey in the registry:
    HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows
  3. On the Edit menu, point to New, and then click New Key and name the key Windows Search.
  4. Click on the new key Windows Search.
  5. On the Edit menu, point to New, and then click DWORD Value.
  6. Type PreventIndexingOutlook for the name of the DWORD, and then press Enter.
  7. Right-click PreventIndexingOutlook, and then click Modify.
  8. In the Value data box, type 1 to enable the registry entry, and then click OK.
  9. Note to disable the PreventIndexingOutlook setting, type 0 (zero), and then click OK.
  10. Exit Registry Editor, and then restart Outlook.

iCloud fails to load properly in Outlook 2007 [WORKAROUND]

ISSUE
iCloud fails to load properly in Outlook 2007, Outlook 2010, Outlook 2013 and Outlook 2016.
When accessing Calendar, Contacts, or Tasks, you get the following error:
The set of folders cannot be opened. MAPI was unable to load the information service C:PROGRA~2COMMON~1AppleInternet ServicesAPLZOD.dll. Be sure the service is correctly installed and configured.'
STATUS: WORKAROUND
The loading of unregistered MAPI services has been disabled by default to make Outlook more secure.
If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issue. For more information, see this page.
For Outlook 2007, use the workaround below:
Warning: This workaround may make your computer or your network more vulnerable to attack by malicious users or by malicious software such as viruses. Microsoft does not recommend this workaround but is providing this information so that you can choose to implement this workaround at your own discretion. Use this workaround at your own risk.
If you have trusted applications that depend on being loaded in this manner, you can re-enable those applications by setting the following registry key:
REG_DWORD HKEY_CURRENT_USERSoftwareMicrosoftOffice12.0OutlookSecurityAllowUnregisteredMapiServices
You can use the following registry subkey to apply the registry setting as a domain policy:
HKCUSoftwarePoliciesMicrosoftOffice12.0OutlookSecurityAllowUnregisteredMapiServices
Value 0 (default): Block loading of unregistered MAPI services. This is the recommended setting to avoid unexpected execution of unknown code.
Value 1: Enable loading of unregistered MAPI services.
Important: The following steps show you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Please make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see this article.
To make these registry changes, follow these steps:
  1. Click Start, click Run, type regedit in the Open box, and then click OK.
  2. Locate and then click the following subkey in the registry:
    HKCUSoftwareMicrosoftOffice12.0OutlookSecurity
  3. On the Edit menu, point to New, and then click DWORD Value.
  4. Type AllowUnregisteredMapiServices for the name of the DWORD, and then press Enter.
  5. Right-click AllowUnregisteredMapiServices, and then click Modify.
  6. In the Value data box, type 1 to enable the registry entry, and then click OK.
    Note: To disable the AllowUnregisteredMapiServices setting, type 0 (zero), and then click OK.
  7. Exit Registry Editor, and then restart the computer.
Vulnerability information (applies to all versions)
MAPI does not validate that a provider’s DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated. This can allow arbitrary code execution to occur.

Some Web-based Outlook add-ins don't work in when using on premise Exchange 2013

Last updated: July 26, 2017
ISSUE
Some Web-based Outlook add-ins don't work in Outlook when using on premise Microsoft Exchange 2013.
This only applies to the MSI installations of Outlook 2016/Office 2016. Click-2-Run installations are not affected. The Office App add-in may show an Operation Failed error or seem to not respond to button presses or other UI choices.
Status: Investigating
We're investigating the issue and will update this page when a fix is available.

Outlook crashes after choosing File > Options and prompts to install Outlook again [FIXED]

Last updated: November 29, 2017
ISSUE
Outlook crashes when you click File > Options, and you see the error below.
This issue only affects First Release for Deferred Channel Version 16.0.8201.2158.
Crash details:
Faulting application name: OUTLOOK.EXE, version: 16.0.8201.2158, time stamp: 0x5975d6bc
Faulting module name: KERNELBASE.dll, version: 6.1.7601.23807, time stamp: 0x5915fe14
Exception code: 0xc06d007f
Fault offset: 0x000000000001a06d
Faulting process id: 0x11fc
Faulting application start time: 0x01d307f0bc63afda
Faulting application path: C:Program FilesMicrosoft OfficerootOffice16OUTLOOK.EXE
Faulting module path: C:windowssystem32KERNELBASE.dll
STATUS: FIXED
This issue is fixed in Semi-Annual Channel (formerly First Release for Deferred Channel) build 8201.2162 released in August 2017.
This issue is also fixed in Deferred Channel build 8201.2209 released in November 2017.
For more information about when builds are available for their respective channels, go to Update history for Office 365.

Outlook crashes and slow performance

Outlook crashes after choosing File > Options and prompts to install Outlook again [WORKAROUND]

Last updated: November 29, 2017
ISSUE
Outlook crashes when you click File > Options, and you see the error below.
This issue only affects First Release for Deferred Channel Version 16.0.8201.2158.
Crash details:

Outlook 2016 Known Issues

Faulting application name: OUTLOOK.EXE, version: 16.0.8201.2158, time stamp: 0x5975d6bc
Faulting module name: KERNELBASE.dll, version: 6.1.7601.23807, time stamp: 0x5915fe14
Exception code: 0xc06d007f
Fault offset: 0x000000000001a06d
Faulting process id: 0x11fc
Faulting application start time: 0x01d307f0bc63afda
Faulting application path: C:Program FilesMicrosoft OfficerootOffice16OUTLOOK.EXE
Faulting module path: C:windowssystem32KERNELBASE.dll
STATUS: FIXED
This issue is fixed in Semi-Annual Channel (formerly First Release for Deferred Channel) build 8201.2162 released in August 2017.
This issue is also fixed in Deferred Channel build 8201.2209 released in November 2017.
For more information about when builds are available for their respective channels, go to Update history for Office 365.

Windows Command prompt running OfficeBackgroundHandlerRegistration task flashes every hour [FIXED]

Last updated: June 7, 2017
ISSUE
After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running.
STATUS: FIXED
This issue is now fixed in Version 1705 (Build 8201.2075). To get the update Office, open any Office 2016 app and choose File > Account > Update Options > Update.

Outlook for Windows hangs when previewing Excel files attached to email [FIXED]

Last updated: Oct 20, 2017
ISSUE
Outlook 2016 freezes when you try to preview an Excel file that’s attached to an email.
Fixed
Please install the Windows 10 Fall Creators Update to fix this issue.

Other Outlook issues affecting email messages, attachments, and features

Unable to create second profile with different account on ADAL enabled tenant. [WORKAROUND]

Last Updated: March 9, 2018
ISSUE
When you try to configure a secondary account from the same Office 365 tenant in Outlook 2016 (Current Channel) with ADAL enabled, you receive the following error: 'An encrypted connection to your mail server is not available. Click Next to attempt using an unencrypted connection.'
STATUS: FIXED
This issue is fixed in Office Insider Build 16.0.9124.2004 and higher. The fix will be available for Monthly Channel versions later in March.
The fix is currently only available in Insider build 16.0.9124.2004 and higher. It will eventually be made available to Monthly Channel versions later in March. For Semi-Annual Channel and Semi-Annual Channel (Targeted) versions, please disable ADAL on the client as a workaround. To do this, follow these steps to Disable modern authentication on devices.
You can also start Outlook using the /profiles switch and create the profile. To do this:
  1. Right-click the Windows Start menu and choose Run.
  2. Type Outlook.exe /profiles and press OK.
  3. When Outlook starts, click New in the Choose Profile window to create a new profile.

Some Junk Mail goes to Inbox after configuring Junk Email Options to “Safe Lists Only” [FIXED]

Last updated: March 1, 2018
ISSUE
For IMAP and POP accounts, if you configure the Junk Email Options to Safe Lists Only, and send multiple emails from an unsafe email account afterwards – the initial email will go to Junk Mail, the rest will continue to arrive in your Inbox.
STATUS: FIXED
The issue is fixed in Monthly Channel Version 1709 (Build 8528.2139). To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.

All Mail and Unread Mail tab options no longer show in Outlook [WORKAROUND]

Last updated: June, 5 2017
ISSUE
You may notice that All, Unread , Mentioned and other sort and filtering options, such as By date, and Newest are missing in Outlook above your email list.
If your Outlook version is 1703 (Build 7967.2161) or higher, the filters and sort options were moved under the All drop down menu, to accommodate space for the new Focused inbox.
Note: If you don't know your Outlook version, go to File > Office Account to check your Outlook version.
How to filter and sort your mail
To sort your emails by Unread, Mentioned or use other filters, select the All button and choose one of the options. You can also select Arrange By and then pick one of the options such as Date, From, etc.
Another options is to use the Filter Email button on the ribbon. For more information, see Filter email messages.
Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers.
Use the Quick Access Toolbar
To access the filtering options faster, add them to your Quick Access Toolbar.
For example, to add Unread to the Quick Access Toolbar:
  1. Click anywhere in the Search box.
  2. When the Search tab commands become available on the toolbar, right-click the Unread icon, and then select Add to Quick Access Toolbar.
To add Arrange by to your Quick Access Toolbar, you need to add it to the ribbon first:
  1. Right click the Ribbon and click Customize the Ribbon.
  2. Under the Customize the Ribbon Main Tabs , click the Home (Mail) > New Group.
  3. Select Rename, and rename the new group to Arrange.
  4. In the Choose commands from column, select All Commands.
  5. Scroll down to Arrange By, select the third Arrange By and click Add.
  6. Click the name of the new group (Arrange By) under Customize the Ribbon, and click the UP arrow to move it under the Respond group. You can change this later if you want to move it somewhere else.
  7. Click OK. This will add the new group on the Ribbon.
  8. To add Arrange by to your Quick Access Toolbar, right click on the new Arrange By button and click Add to Quick Access Toolbar.
For more information, see Add a command to the Quick Access Toolbar
There is currently no option to revert to the prior behavior, but we would love to hear your feedback to help us with future designs . Please visit the Outlook User Voice page, and let us know what you think of these options.

Meeting invitations are automatically forwarded by an attendee [FIXED]

Last updated: August, 18 2017
ISSUE
Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite. This happens to accounts that are configured in the iOS Mail app.
Status: FIXED
This issue is fixed. Please install the latest updates on your phone to resolve the issue.

You may not be able to edit shared calendars [FIXED]

Last updated: Sep 19, 2017
ISSUE
Customers on Current Channel major version 16.0.8326.2062 are not able to edit shared calendars.
You might see the following error when trying to edit or add a new item on the calendar:
You don’t have permission to create an entry in this folder. Right-click the folder, and then click Properties to check your permissions for the folder. See the folder owner or your administrator to change your permissions.
If you right-click the shared folder to check permissions, you see the following error:
Cannot display the folder properties. The folder may have been deleted or the server where the folder is stored may be unavailable. Cannot display folder properties. You don’t have appropriate permission to perform this operation.
Status: Fixed
The fix for this issue is being released in build 16.0.8431.2079. To install the update immediately, please go to File > Office Account > Update Options > Update Now.

Outlook 2016 issues with scrolling [PARTIAL FIX/WORKAROUND]

Last updated: August 24, 2017
ISSUE
In Outlook 2016, you may experience the following scrolling problems:
See Version and build numbers of update channel releases.
STATUS
WORKAROUND
For Current Channel, set these two registry keys that will disable the flight that is causing the scrolling issue:
HKEY_CURRENT_USERSOFTWAREWow6432NodeMicrosoftOffice16.0CommonExperimentEcsOverrides
DWORD: ofsatqrgsry3ri0
Value: 0
HKEY_CURRENT_USERSOFTWAREMicrosoftOffice16.0CommonExperimentEcsOverrides
DWORD: ofsatqrgsry3ri0
Value: 0
Or you can open Notepad and paste the text below and save the file as .reg extension and then double click the file to import it into the registry:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USERSOFTWAREWow6432NodeMicrosoftOffice16.0CommonExperimentEcsOverrides]
'ofsatqrgsry3ri0'=dword:00000000
[HKEY_CURRENT_USERSOFTWAREMicrosoftOffice16.0CommonExperimentEcsOverrides]
'ofsatqrgsry3ri0'=dword:00000000

Outlook 2007 and Outlook 2010 display wrong languages [FIXED]

Last updated: Sep 19, 2017
ISSUE
After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface.
Customers using the language in the first column may see parts of the page in the language listed in the second column:
Arabic
Swedish
Bulgarian
Brazilian Portuguese
Catalan
Brazilian Portuguese
Czech
Swedish
Hungarian
Swedish
Italian
Brazilian Portuguese
Kazakh
Brazilian Portuguese
Korean
Brazilian Portuguese
Latvian
Swedish
Norwegian
Swedish
Dutch
Swedish
Portuguese
Brazilian Portuguese
Slovenian
Swedish
Serbian Latin
Swedish
Thai
Chinese Traditional Taiwan
Turkish
Chinese Traditional Taiwan
STATUS: Fixed
This issue is fixed now.
Please follow the instructions in KB 4011086 to uninstall it, and then install KB 4011110.

Automated troubleshooting tools

A tool available to Office 365 for business subscribers, the Support and Recovery Assistant for Office 365 will run a series of diagnostic tests on your computer and help you set up a new profile, or resolve other issues. If any of the tests fails, it will provide suggested solutions to get your problem solved.
Note: Support and Recovery Assistant for Office 365 is currently only available for use by Office 365 customers.
CalCheck checks your Outlook calendar or general settings for problems, such as permissions, free/busy publishing, delegate configuration, and automatic booking. It also checks each item in your calendar folder for known problems that can cause unexpected behavior, such as meetings that seem to be missing.

Need more help?

Talk to support.
If you have an Office 365 for home subscription, or you purchased a one-time download of Office 2016, click the Contact Uslink at the bottom of this page.
Ask the community
Get help from experts in our forums:
Office on Windows forum for personal, home, or university users
Office 365 community forum for business users
Provide feedback in Office app
You can send feedback directly to our Office teams:.
In Office 2016 on Windows 10, open an Office app, and click File > Feedback.

Have a feature request?

We love reading your suggestions on new features and feedback about how you use our products! Share your thoughts on the Outlook UserVoice site. We’re listening.