Microsoft Teams login fails immediately after password change

Hi @Trieu Nguyen,

Thank you for your detailed update and for sharing the steps you have already tried. I appreciate the effort you’ve put into troubleshooting this issue.

Based on your description, the problem does not appear to be related to cached data or the account itself, as you were able to log in successfully on another device and with a different account. This suggests the issue may be specific to your Android device.

Since this requires a deeper investigation into device-specific factors, we recommend contacting Microsoft Support Live Agent, who can assist you further and perform advanced diagnostics. You can request your IT admin reach them on your behalf through the following link: Microsoft 365 Admin Center

A support engineer can conduct a remote session to investigate the situation, verify the back-end configurations, and run the necessary synchronization tools to resolve the issue.   

As forum moderators, we don’t have access to the detailed logs or backend systems needed to troubleshoot this effectively due to privacy and security constraints. For that reason, the most efficient solution would be to contact Microsoft’s support team directly.      

• We sincerely recommend you try to create a support ticket from Microsoft 365 Admin Center >Support > Help & Support.  

• Microsoft provides customer service phone numbers based on your region. You can find the appropriate contact number here: Customer service phone numbers - Microsoft Support 

Note: If you’re an end-user, please coordinate with your Office 365 Global Administrator to handle these steps.        

Once again, thank you for your exceptional effort. We deeply appreciate customers like you who not only use our products extensively but also provide such clear and insightful feedback. It helps us improve for everyone. 

Thank you for your patience and cooperation.

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Hi @Trieu Nguyen,

Thank you for reaching out to Microsoft Q&A Forum.

This issue typically occurs because the authentication token from the previous session is still cached. When you change your password, Teams tries to reuse the old token, causing the login to fail even after entering the new password. Clearing cached credentials and signing out completely usually resolves the problem.

1. Remove old accounts from device settings

• Go to Settings → Accounts → Manage accounts.
• Delete any duplicate or old Microsoft/Work accounts.

2. Clear Teams app cache and data

• Settings → Apps → Teams → Storage → Clear Cache & Clear Data.

1. Clear your phone's default browser's cache:

• In Edge, at the bottom, navigate to Settings → Private and Security → Clear browsing data
• In Chrome, at the upper right corner, choose 3 dots → Delete browsing data.
• The same principle applies to all browsers you use as default browsers in your phone: clearing the cache ensures a clean login process when the browser is redirected to the sign-in page.

4. Reinstall Teams

• Uninstall Teams → Reboot → Turn off Auto Sync Data → Reinstall from Play Store.
• You can find Auto Sync Data at the bottom of "Manage Accounts" section.

5. Sign in using the full UPN format

• For work accounts, use your organization’s domain.
• This forces a fresh authentication session.

Note: Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution. 

I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this. 

Thank you for your patience and your understanding. If you have any questions, please feel free to reach out. 

I'm looking forward to your reply.

If the answer is helpful, click "Accept Answer" and vote positively. If you have more questions about this answer, click "Comment".

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