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Since you posted your question in English, I’ll reply in English as well. If you’re more comfortable using another language, please let me know, I’ll be happy to tailor my response to your preferred language.
Also, as this thread is submitted under the Windows category, I’ll provide steps tailored for a Windows device. If your PC is running a different operating system, please let me know so I can adjust the instructions accordingly.
Thank you for your understanding!
Hello @keithleung,
Thank you for posting your valuable question on Microsoft Q&A forum.
The error message “The credential is invalid. Unexpected sub status (6008)” generally appears when your device is trying to authenticate with corrupted, outdated, or invalid cached credentials.
Please follow the steps below carefully in order to troubleshoot for your issue:
Step 1: Sign out of all Office apps
- Open Word (or any Office app).
- Go to File > Account.
- Select Sign out.
- Close all Office applications (Outlook, Word, Excel, Teams).
Step 2: Remove old work or school account from Windows
- Open Settings > Accounts > Access work or school.
- Select your current account.
- Click Disconnect and confirm.
- Restart your computer.
Step 3: Delete identity and authentication cache
- Press Windows + R.
- Open the following location: %localappdata%\Microsoft
- Delete these folders if they exist:
- IdentityCache
- OneAuth
- Olk
Note: Folder Olk is located in the same Microsoft folder as OneAuth.
Step 4: Clear Credential Manager
- Open Control Panel > Credential Manager.
- Select Windows Credentials.
- Remove any entries related to:
- MicrosoftOffice
- OneDrive
- OneAuth
- ADAL
- Accounts not associated with your work domain
- ...
Step 5: Restart and sign in again
- Restart the computer.
- Open OneDrive.
- Sign in using your current company account.
- Test the behavior again.
If the issue still occurs, please let me know so I can provide you with further troubleshooting steps. Thank you again for sharing your question!
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