Microsoft Teams ask me to sign all the time and then give me an error

Hi RB,

To assist you better with more accuracy, can you please provide more information about this issue:

1. What is the exact error message or error code you receive when Teams asks you to sign in again?
2. Are you using a personal Microsoft account (Outlook.com, Hotmail.com, Live.com) or a work/school account managed by an organization (@onmicrosoft.com)?
3. Can you successfully sign in to Microsoft 365 services through a web browser, such as Outlook on the web or OneDrive online?
4. When you try to access OneDrive, do you receive an error message, or does it continuously prompt you to sign in as well?
5. Is the problem occurring on a Windows PC, Mac, or mobile device?

To ensure I provide the most accurate assistance, I would appreciate any additional information you can share regarding your current situation. If possible, please include screenshots, as they can be very helpful in the investigation.

Thank you for your patience and understanding. Should you have any further questions, please feel free to comment in this post.

If the answer is helpful, please click 'Yes' and kindly upvote it.

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Hi RB,

The error message “657rx - Code: 2148073494” typically occurs when Windows is unable to validate your device’s security state or user identity.

In some cases, the issue may also be caused by corrupted credentials, expired sign‑in tokens, or a mismatch between your device and your organization’s identity platform (for example, Microsoft 365 or Azure AD). When Windows cannot successfully verify this trust relationship, the error is triggered.

Because this is an authentication‑related issue, resolution generally involves restoring the trust relationship between the device and the associated account.

You can try the following steps to clear your credentials cache to ensure a clean reset

1. Please sign out your accounts from Office applications, then close all Office applications.   
2. Open File Explorer, paste the following path, and delete all files and folders. %localappdata%\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy   
3. In the Windows search bar, search for "Access Work or School".   
4. Check if you can see your school account in "Access Work or School".   

If you don't see it, please select Connect and add your business account.   

If you can see it, please select it and select Disconnect. After that, please click "Connect" and log into your account again to register the device.   

• Open the Control Panel on your PC.   
• Go to User Accounts > Credential Manager.   
• Under both Windows Credentials and Generic Credentials, look for any entries related to your Microsoft 365 business account and Office apps.   

• Select and remove those entries.   
• Restart your computer and try adding your account in Office again.  

Download OLicenseCleanup.vbs and run it. In this way, you can use this package to remove the license, clear the stored identities in the registry, and remove the credentials. You can follow this: Reset activation state for Microsoft 365 Apps for enterprise - Microsoft 365 Apps | Microsoft Learn to reset activation state 

Restart your device.

Reopen Office apps and sign in with the correct account.

Additionally, this error is often linked to device registration issues in Azure Active Directory (Azure AD) or Microsoft 365. It may occur if a device is incorrectly registered, listed multiple times, or blocked due to recent policy changes by your organization’s IT administrators. These inconsistencies can prevent successful authentication, triggering the error.

If the issue persists after clearing your credentials cache, please reach out to your IT admin and ask them to remove the affected device from your Azure or Microsoft 365 account and re-registering it creates a clean directory entry, often resolving trust or identity mismatches.

Thank you, is there anyone that can help please?