Forum Discussion
Outlook: Teams Add-in Failing on Intialization
Hi all,
Yesterday and today I have seen several people across at least two separate organizations have their Teams Add-In in Outlook crash and get disabled. Upon initial reviews from our team, we have found the following:
Visual C++ runtime
- The .NET Runtime logs show an unhandled exception in: Microsoft.Teams.MeetingAddin.Scheduler.OneAuthUtils.Startup
- This occurs while the Microsoft Teams Meeting Add-in for Outlook is initializing.
- The crash happens right after the Teams add-in loads
Curious is anyone else is seeing the same issue and if any fixes have been found.
There is a Microsoft Support article on this.
Can't post the actual URL because this forum thinks support.microsoft.com is verboten. So instead you'll have to do a Search for
Classic Outlook crashes and opens in Safe Mode starting March 12 2026
2 Replies
There is a Microsoft Support article on this.
Can't post the actual URL because this forum thinks support.microsoft.com is verboten. So instead you'll have to do a Search for
Classic Outlook crashes and opens in Safe Mode starting March 12 2026This is the exact issue. You can also google EX1254044 for anyone else who may see this. Thank you Hornblower409!
