Microsoft Teams error 657rx – 5 tested fixes

If you need to fix Microsoft Teams error 657rx, this guide will walk you through five reliable solutions. The error often means there’s a problem with account authentication, cached credentials, or corrupt Office files. It may appear after hardware changes, a BIOS update, or when upgrading to Windows 11.

Microsoft Teams error 657rx – 5 tested fixes

Below are five clear fixes. Try each one, then sign back into Teams to check whether the Microsoft Teams error 657rx is resolved. Use an administrator account where needed and back up important data.

Fix 1: Clear cached credentials

Old or corrupted credentials often block sign-in.

1. Open Credential Manager from the Start menu.
2. Choose Windows Credentials.
3. Remove entries related to Microsoft Office, Outlook, or Teams.
4. Restart Teams and sign in again.

Fix 2: Clear app cache files

Cache files can corrupt authentication.

1. Close Microsoft Teams.
2. Press Windows + R, paste %appdata%\Microsoft\Teams, and press Enter.
3. Delete the files and folders inside that directory.
4. Reopen Teams and sign in.

Fix 3: Reconnect your account

Disconnected or stale work/school accounts can trigger 657rx.

1. Sign out of all Office apps and close them.
2. In File Explorer, delete the folder: %localappdata%\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy.
3. Open Settings, go to Accounts, then Access work or school. Disconnect any entries, then click Connect to add your account again.
4. Sign in to Teams and check for the error.

Fix 4: Updating Windows

System incompatibilities sometimes cause authentication errors.

1. Press Windows + I to open Settings.
2. Go to Windows Update and Check for updates.
3. Install available updates, then reboot and retry Teams.

Fix 5: Repairing Microsoft Office

Corrupt Office installations may block Teams sign-in.

1. Open the Control Panel and go to Programs and Features.
2. Locate Microsoft Office or Office 365, right-click, and choose Change.
3. Select Quick Repair first; if the issue persists, run Online Repair.
4. Restart your PC and sign in to Teams.

Quick final tips

• Ensure you have a stable network before testing sign-in.
• If the problem persists, consider creating a temporary new Windows profile to see if the issue is profile-related.
• As a last resort, contact Microsoft Support for account/authentication help.