Content
- Outlook known issues in the October 2019 updates
- Outlook Known issues in December 2024 updates
- Outlook Known issues in April 2023 updates
- VBScript does not run or you receive malicious code warning when using a custom form for Outlook
- Outlook Known issues in May 2024 updates
- Can't open Enterprise Vault items

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. To learn more about how to send us feedback, please see How do I give feedback on Microsoft Office. To access the filtering options faster, add them to your Quick Access Toolbar. 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.
Outlook known issues in the October 2019 updates
Please install the Windows 10 Fall Creators Update to fix this issue. Outlook 2016 freezes when you try to preview an Excel file that's attached to an email. After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running. send/receive error 0x800CCC0E fix For more information about when builds are available for their respective channels, go to Update history for Microsoft 365. We're investigating the issue and will update this page when a fix is available.
Outlook Known issues in December 2024 updates
The person who sent you the invitation will need to remove your permissions and then send a new invitation. Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. Check the status bar at the bottom of the screen to see if another process is running.
Outlook Known issues in April 2023 updates
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. 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. If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install Outlook stuck on synchronizing folders iCloud to resolve this issue. This issue affects all Outlook versions on Windows 7, Windows 8, Windows 10.

VBScript does not run or you receive malicious code warning when using a custom form for Outlook
The folder may have been deleted or the server where the folder is stored may be unavailable. You don't have appropriate permission to perform this operation. Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers.
- To keep up with new viruses as they're created, antivirus software vendors periodically provide updates that you can download from the Internet.
- If everything is working correctly, you can now delete the old profile.
- Here are some common fixes that should work when Outlook doesn't open, whether you're using Windows or a Mac.
- Although add-ins can enhance your user experience, they can occasionally interfere or conflict with Outlook.
- You might need to set Windows Update to automatically download and install recommended updates.
- When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC.
- We're investigating the issues and will update this page when a fix is available.
Outlook Known issues in May 2024 updates
Here are some common fixes that should work when Outlook doesn't open, whether you're using Windows or a Mac. To manage your mailbox by using the AutoArchive feature, see AutoArchive settings explained. We recommend that you move several items in your larger folders to separate folders, or that you archive those items by using the AutoArchive feature. These steps are provided in a specific order based on commonality and complexity. Find solutions to common problems or get help from a support agent.
Can't open Enterprise Vault items
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. If you use the cloud-based Microsoft Outlook profile repair and recovery steps 365 on a PC or Mac, the automated Support and Recovery Assistant tool can diagnose and fix many issues, including Microsoft Outlook not starting. You may have to contact your antivirus software vendor to determine how to configure the software to exclude any integration with Outlook or to exclude scanning in Outlook. For a list of antivirus software vendors, see Consumer antivirus software providers for Windows. If the problem doesn't occur after you restart Outlook, one of the add-ins is likely the cause of the problem. Restore the add-ins one at a time until the problem does occur to determine which add-in is causing the problem.