Office 365 Account Stuck in Sign in Loop

Situation: After enabling Microsoft MFA or Microsoft Authenticator on Office 365, the user unable to stay signed in to my work account on Teams, Outlook, Office365 for more than 5 minutes.

Troubleshooting 1: Clear the cached password

  1. Sign out from Office application and close all the Office applications opened on your system. To sign out, open any Office application, let’s say Word, click File>Account>Sign out.

2) Open Control Panel>User Account>Credentials Manager>Windows Credentials>Delete all MicrosoftOffice16 and MicrosoftOffice15 credentials.

3) After deleting the cached password, open Word and click File>Account>Sign in and enter your Office 365 log in credentials. Try to sign in to Skype for business as well, see if this is resolved.

Troubleshooting 2: Reset MFA

  1. Login Microsoft 365 admin center.
  2. Navigate to Users>Active users. Highlight on the user who has the problem.
  3. Click on the multi-factor authentication.
  4. Click on Manage user settings.

5. Check Delete all existing app passwords and generated by the selected users.

Published by

Bob Lin

Bob Lin, Chicagotech-MVP, MCSE & CNE Data recovery, Windows OS Recovery, Networking, and Computer Troubleshooting on http://www.ChicagoTech.net How to Install and Configure Windows, VMware, Virtualization and Cisco on http://www.HowToNetworking.com

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