Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Dear Du Do,
Good day! Thank you for posting to Microsoft Community.
Based on your description, I understand that you have an issue where your Microsoft Authenticator App crashes on launch. For technical issues related to the app, we do have a dedicated community for support. I recommend that you raise the query in microsoft-authenticator - Microsoft Q&A and Technet forums - Support for Microsoft Authenticator App. Technical engineers over there specialize in this area, and experts will focus on queries to further assist you.
I ask you to post in above mentioned category because you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction.
In the meantime, I would like to invite community members and MVPs in the forum to share their knowledge or any workaround and insight on this topic.
Thank you for your kind understanding and have a good day!
Best Regards,
Ashraf | Microsoft Community Moderator