
Hi @UserT
According to your case description, you are experiencing authentication issues on Outlook and Teams. You can try the following steps to troubleshoot the problem:
- Clear cache and data: For Android and iOS, go to your device's settings, find the Outlook and Teams apps, and then clear their cache and data.
- Update apps: Make sure both Outlook and Teams apps are updated to the latest versions available in the Google Play Store or Apple App Store or reinstall both apps.
- Check Internet connection: Make sure you have a stable Internet connection. Try switching between Wi-Fi and mobile data to see if it helps, and if you are using a VPN, try disconnecting and see if the problem is solved.
- Delete and re-add the account: Delete your work account from your device, clear the app data, and then re-add the account.
- Contact your administrator: If the above steps don't work, contact your company's administrator. They may need to reset your password or revoke previous sessions from the Microsoft Entra Admin Center.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.