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on January 12, 2026
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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 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 iCloud to resolve this issue.
Outlook crashes after choosing File > Options and prompts to install Outlook again [WORKAROUND]
Safe Mode allows you to start Outlook with all extensions temporarily disabled.This command deletes the custom folder views, restoring default configurations.Stay updated, back up regularly, and enjoy uninterrupted productivity in your Outlook workspace.It’s harmless and resolves 30% of stuck startup issues according to Microsoft community reports.The folder may have been deleted or the server where the folder is stored may be unavailable.This happens to accounts that are configured in the iOS Mail app.To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android.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.When the Outlook app opens, I can see the 'Try the new Outlook' toggle.
To access the calendar shared with your Microsoft 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. If you typically use an Outlook.com account for email, this issue can occur if there are multiple aliases on the account and the 3rd party email address is the primary alias.
Outlook Known issues in June 2022 updates
There is a new version of outlook that is web based, but still works like an app, and has less problems. This solution prevents display rendering errors that occur after driver or DirectX FixTechGuide mailbox repair steps updates. The folder may have been deleted or the server where the folder is stored may be unavailable. Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite.
Outlook Known issues in September 2022 updates
In the meantime, please use the workarounds suggested for each issue. 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. You might need to set Windows Update to automatically download and install recommended updates.
Outlook Known issues in January 2023 updates
This happens to accounts that are configured in the iOS Mail app. To edit a shared calendar, office 365 sync errors fix go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Outlook Known issues in March 2024 updates
Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers. Outlook 2016 freezes when you try to preview an Excel file that's attached to an email. This issue affects all Outlook versions on Windows 7, Windows 8, Windows 10. After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface.
You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. To access the filtering options faster, add them to your Quick FixTechGuide Outlook repair tutorial Access Toolbar. 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.