Outlook for Mac crashing with simple tasks

Hi Nick, 

I hope you are doing well ! I just want to check if you have had a chance to test the steps earlier? Please let me know if they helped resolve the issue or if you are still experiencing any difficulties. I am here to assist you further.

Best Regards

Dear Nick, 

Please note that this is a user-to-user community. As moderators, we have limited access to internal development details. Our role is to direct users to the appropriate support channels and resources. While we cannot provide backend analysis, we will do our best to assist within our responsibilities. 

Thank you for reaching out to the Microsoft Q&A forum. I understand Outlook for Mac began crashing after the most recent update (16.106), mainly when replying (not when composing a new email). I am happy to assist you. Please switch back to Legacy Outlook when the new Outlook experience is causing problems. In Outlook for Mac, go to Help > Revert to Legacy Outlook. In additional, please also:

• Install the newest Outlook build via Microsoft’s Mac update packages  
  • See the current Outlook for Mac update packages and release history on Microsoft Learn. From there, you can obtain the latest Outlook update package for Office Mac (Version 16.106.2) and apply it to your installation.
• Check Microsoft’s “known issues / workarounds” hub for Outlook for Mac  
  • Review Fixes or workarounds for recent issues in Outlook for Mac - Microsoft Support and compare your symptom with any listed mitigations.  
• Open a support case from inside Outlook for Mac and attach logs (if the crash persists after steps 1–3) 
  • Use Help > Contact Support in Outlook for Mac. Allow log collection (Select Continue), then enter your details and start the conversation. 

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If Outlook for Mac is crashing when replying to emails after the recent update, you may want to try a few troubleshooting steps:

1. Update Outlook: Ensure that you are using the latest version of Outlook for Mac. Check for updates and install any available updates.
2. Reset Preferences: Sometimes, resetting your preferences can help resolve crashing issues. You can do this by deleting the preferences files for Outlook.
3. Safe Mode: Try starting Outlook in Safe Mode to see if the issue persists. This can help identify if the problem is caused by add-ins.
4. Reinstall Outlook: If the problem continues, consider uninstalling and then reinstalling Outlook to ensure a clean installation.
5. Check for Conflicting Software: Ensure that there are no other applications or services that might be conflicting with Outlook.

If these steps do not resolve the issue, you may want to reach out to Microsoft Support for further assistance.

References:

• Microsoft Office apps for Mac quit unexpectedly - Microsoft Q&A