Read how to Add your Outlook.com account to another mail app. 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.

VBscript does not run or you receive malicious code warning when using a custom form for Outlook

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. 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. 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.

Outlook Known issues in May 2024 updates

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. 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. Corrupted or badly set-up Outlook profiles can often cause start-up problems.



Microsoft Outlook is one of the best-known business-class email clients from Microsoft. It is a feature-rich application that allows users to manage multiple email accounts, calendars, contacts, and tasks. Outlook also offers several advanced features, like email tracking, read receipts, and email templates, making it a powerful tool for managing email-based workflows. However, sometimes, it can experience connectivity issues, especially when using a Microsoft 365 account.

Outlook known issues in the Nov 2017 updates

Outlook 2016 freezes when you try to preview an Excel file that's attached to an email. 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. MAPI does not validate that a provider's DLL that it is requested to Office 365 Sync Errors Fix 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.

Outlook 2007 and Outlook 2010 display wrong languages

Understanding the root causes and using the right tools can make all the difference. While built-in tools like ScanPST offer a basic Safety net, they often fall short when it comes to rectifying deeper file damage. Faulty hard drives or disk errors can corrupt the Outlook data stored locally. This creates crashes that seem random—until you dig into the hardware logs.

Outlook known issues in the July 2019 updates

• The loading of unregistered MAPI services has been disabled by default to make Outlook more secure.
• 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.
• The built-in search will display the message below to indicate it is not using the Windows Search service.
• Whether it’s restoring email from encrypted backups or recovering badly broken PSTs, Stellar gets the job done with minimal fuss.
• If a user has a large mailbox or lots of folder nesting, syncing might lag or even crash.
• It is a feature-rich application that allows users to manage multiple email accounts, calendars, contacts, and tasks.

A vast community of Microsoft Office365 users that are working together to support the product and others. The update for Microsoft 365 Apps will be rolled out gradually to users of this update channel from January 16, 2025 (PST). Microsoft Outlook crashes with the above build on Windows Terminal Server under Windows Server 2016 with the following error message.

Outlook Known Issues in September 2021 updates

See the Outlook sync help from FixTechGuide folder owner or your administrator to change your permissions. 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.



I had picked up on this in the blog post Microsoft Outlook 365 or other MS 365 apps are dropping suddenly errors. Microsoft had confirmed the issue for Windows Server 2016 and 2019 repair PST file without data loss and recommended a downgrade. You can also add the secondary connected accounts (Gmail, Yahoo, etc.) in Outlook.com as additional accounts in the Outlook profile. Your antivirus software can also cause issues with Outlook connectivity.

Let’s see how to fix Outlook connection problems in Microsoft 365 accounts. The file react-native-win32.dll was reported as not found in the specified path, even though the file exists. Robert suspected that it might be related to an Edge update, and replacing the .dll with an older version or downgrading Microsoft 365 to an older build fixed the problem.