I'm wondering if anyone else has encountered problems with the Teams Add-In for Outlook crashing recently, especially after the latest Teams update that started rolling out on March 20. I've seen multiple reports across different organizations that the add-in gets disabled due to an unhandled exception in OneAuthUtils during its initialization. Here are some details and potential fixes I found: 1) Disable the add-in by starting Outlook in Safe Mode, accessing the add-ins section, and unchecking the Teams add-in. 2) Ensure both Teams and Microsoft Office are fully updated, and consider repairing the Microsoft Visual C++ Redistributable. 3) As a last resort, you can uninstall and reinstall the Teams Meeting Add-in. Any other suggestions or knowledge on whether Microsoft is aware of this issue?
2 Answers
This seems to be a common issue with Outlook. Add-ins sometimes crash and get disabled without warning. It’s been a frustrating reality for a long time. But yeah, classic Microsoft right?
Check if you can look up EX1254044—it outlines some related details that might help.

This is exactly what I needed! Thanks a ton!