Microsoft teams sign out automatically on Win 10

Question

Hello! I've microsoft teams in Windows 10 with a business account, and an other teams application in a different devie with win 11 (business account too).

In Windows 11 teams log out only when i change password or company requests a password change.

In Windows 10 it will log out each time i restart the Computer.

• I tried to reinstall,
• i've no the folder in %appdata%\Microsoft\Teams
• I've no teams credentials in windows related to teams.

But still almost all times i restart the computer (or it will keep open) teams auto log out.

How could i avoid it? it's so boring and broken.

Thank you

Answer 1

It sounds like you're experiencing an issue where Microsoft Teams logs you out automatically on Windows 10 after a restart, which is not the case on your Windows 11 device. Here are a few things to consider:

1. Domain-Joined Account Behavior: If your Windows 10 machine is domain-joined, Teams may automatically log in using the domain account. If you want to switch to another account, you need to log out manually and enter the credentials for the second account. However, if you restart the machine, Teams may log back in using the domain account again.
2. Single Sign-On (SSO): If you are using SSO, signing out of Teams will not remove the account from the device, but it may require you to re-enter your credentials upon signing back in. This behavior can vary between devices and configurations.
3. Registry Settings: If you want to prevent Teams from pre-populating the username on the sign-in screen, there are registry settings that can be adjusted. However, this may not directly address the auto log-out issue you are facing.
4. Shared Device Mode: If you are using a shared device, consider whether the settings for shared devices are affecting your Teams experience. In some cases, using cloud computers for shared devices can help manage user sessions better.

If none of these suggestions resolve your issue, you may want to reach out to your IT department or Microsoft support for further assistance, as they can provide more tailored help based on your specific setup.

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References:

• Teams will always log into the domain-joined PC account
• Sign out of Microsoft Teams

Answer 2

Hi @Matt, 

Welcome to Microsoft Q&A forum. 

Thank you for reaching out and for sharing detailed setup and testing with us. I understand how disruptive it can be to be repeatedly signed out of Microsoft Teams, especially when working across multiple devices. 

To help address this, I recommend the following steps in order. These actions focus on fully resetting Teams, clearing any cached credentials that may be causing sign-in persistence issues, and validating whether any organization-level policies may be impacting the behavior. 

1. Reset Microsoft Teams 

• Go to device settings, select Apps > Installed apps, and then type Microsoft Teams in the search box. 
• Locate the New Microsoft Teams app from the results, select the More options button (...) on the right, and then select Advanced options. 
• In the Reset section, select Reset. 

• Restart Teams. 

2. Clear cached credentials in Credential Manager 

Sometimes outdated or corrupted cached credentials can cause repeated sign-outs. 

• Open Control Panel. 
• Go to Credential Manager. 
• Select Windows Credentials. 
• Remove any entries related to:  
  • Microsoft Teams 
  • Microsoft Office 
  • Microsoft 365 
  • ADAL / MSAL / MicrosoftAccount 

• Restart the device and sign back into Teams. 

3. Contact your IT administrator 

If the issue persists, it may be related to organizational security settings. I recommend reaching out to your IT administrator so they can: 

• Review Conditional Access policies in Microsoft Entra Admin Center. 
• Confirm whether reauthentication is being enforced at device restart. 
• Verify device compliance or sign-in frequency settings. 

If needed, your IT administrator can also create a Microsoft support ticket on your behalf. This allows Microsoft to review tenant-level logs and sign-in events in more detail, which is often necessary for persistent authentication issues. 

I hope this information is helpful. Please follow the steps above and let me know if it works for you. If not, we can continue working together to resolve the issue.  

Thank you for your patience and understanding. If you have any questions or need additional assistance, please don’t hesitate to reach out so I can continue to support you. If you found the response useful, please consider marking it as accepted, as this may help other community members who are looking for similar guidance.  

I look forward to continuing the conversation. 

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