Hello
Repeated Active Directory (AD) account lockouts can be frustrating and challenging to resolve. Here are some steps you can take to troubleshoot this issue:
Check for Cached Credentials: Cached credentials can cause repeated lockouts. Clear any cached credentials on the user’s system.
Check for Mapped Drives: Mapped drives using old credentials can cause lockouts. Ensure all mapped drives are disconnected.
Check for Scheduled Tasks: Scheduled tasks running with outdated credentials can cause lockouts.
Check for Services Running with User’s Credentials: Any services running with the user’s credentials can cause lockouts if the password has changed.
Check for Active Sync Devices: Mobile devices or other active sync devices with outdated credentials can cause lockouts.
Check for Stored Usernames and Passwords: Stored usernames and passwords can cause lockouts if they are outdated.
Check for Disconnected Terminal Server Sessions: A disconnected Terminal Server session running with outdated credentials can cause lockouts.
Check for AD Replication Issues: If there are any AD replication issues, they can cause account lockouts.
If the account continues to get locked out, it might be beneficial to use a tool like Microsoft’s Account Lockout and Management Tools to help identify the source of the lockouts.
https://www.microsoft.com/en-us/download/details.aspx?id=18465
Remember, it’s crucial to analyze and detect the root cause of an account lockout quickly so user accounts don’t remain locked out long.