Hello @Jeffry.A ,
Welcome to the Poly Community.
These dates "should" not affect the device to log in to Microsoft Teams but:
- There is a well known 90 Day bug in the APK provided by our partner Microsoft which is running on the 8800/8500 which will log the devices out after 90 days. No workaround and Microsoft is not releasing newer APK's due to the Trio 8800/8500 running Android 4.4
- In addition, there are various different Teams related caveats around several mechanisms like the minimum Android version. There is also a 50 sign-in limit per account which needs to be cleared via https://devicemanagement.microsoft.com/#home
The above causes the phone to go in cycles when trying to log in aka "something has gone wrong" AADSTS50199 error
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
----------------
If official support is required please check how to phone or open a case here
----------------
The title Poly Employee & Community Manager is a community setting and
does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.
----------------
Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's