he credential is invalid. Unexpected sub status (6008).

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Correlation Id: [Moderator note: personal info removed]

Timestamp: 2026-05-10T23:12:24.000Z

Message: The credential is invalid. Unexpected sub status (6008).

Tag: 657rx

Code: 2148073494

Answer 1

Dear @Jorge Sosa,

According to your description, the situation on your end is likely caused by your organization's settings/policies (e.g. conditional access policy). Based on my research, here are two ways I recommend you try:

Option 1: Disconnect account in Access work or school

Go to Settings > Accounts> Work or School Access, or search for Work or School Access > Then click "Disconnect" to delete all accounts registered there > After that, launch Word or any Office app and sign in.

Option 2: If the problem persists, please try the steps below:

1/ Please sign out your accounts from Office applications, then close all Office applications.

2/ Go to Settings > Accounts > Access work or school then intentionally add the same Outlook (the Outlook account where you were facing the issue) account, logged in, clicked "Disconnect" and then restarted the laptop.

3/ Open File Explorer, paste the following path, and delete all files and folders: %localappdata%\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy

4/ Go to Settings > Accounts > Access work or school and reconnect the account again.

Check if you can see your business account in "Access Work or School". If you don't see it, please select Connect and add your school 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.

5/ Launch one Office application, such as Word, and sign in to your account to confirm it again.

Note: Please understand that as a forum moderator, my role is to provide general guidance and troubleshooting support. I don’t have access to internal systems or backend tools, and I appreciate your understanding of these limits.

I hope the information shared helps point you in the right direction. Please try the steps above and let me know if they work. If not, we can continue working together to narrow this down.

The first response may not always resolve the issue right away, but with your help and more details, we can work toward a solution.

Thank you for your patience and understanding. I'm looking forward for your reply.

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Answer 2

The error message indicates an invalid or corrupted credential/token rather than a simple bad password. A similar case shows this can happen in Outlook/Office when old or inconsistent tokens remain on the system and block proper authentication.

Recommended actions:

1. Remove cached Office/Outlook credentials
   • Open Windows Credential Manager.
   • Under Windows Credentials, remove entries related to Microsoft 365/Office/Outlook.
   • Restart the Office app and sign in again with the correct account.
2. Clear or reset the Office/Outlook profile
   • Create a new Outlook profile (Control Panel → Mail → Show Profiles → Add) and configure the account again.
   • If using Outlook Classic and the profile appears corrupted, consider switching to the new Outlook client, which has resolved similar issues when legacy tokens or profiles were damaged.
3. Fully reinstall Office if profile/credential reset fails
   • Uninstall Office.
   • After uninstall, ensure leftover Office tokens/entries are removed (this may require advanced/registry cleanup by an experienced admin or support professional, as incorrect registry edits are risky).
   • Reinstall Office and sign in again.
4. If the issue persists
   • Engage the organization’s IT admin or Microsoft support to review sign-in logs for the correlation ID and tag (657rx) and confirm whether the problem is with local tokens, certificates, or account configuration.

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References:

• Error in Outlook Classic with credential invalid - Microsoft Q&A