Hi,
The error code might indicate that the user's password expired while the user is still logged on the computer.
To correct invalid credentials, please try below:
1.Change the user's password.
2.Lock/unlock the workstation.
3.Check if there are any system services running as the user account.
4.Verify the password in service configuration is correct for the user account.
More information please refer to:
Event ID 1006 — Group Policy Preprocessing (Active Directory)
http://technet.microsoft.com/en-us/library/cc727283(v=ws.10).aspx
Regards,
Cicely Feng
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Regards,
Cicely