Error Code:
When I create/modify a user, I get the following error " A device attached to the system is not functioning - Error Code : 8007001f "
Possible Root Cause:
The root cause could be the non-operational DC's present in the domain or network issue where DC's are not able to communicate with the server.
Resolution:
Navigate to ADManager Plus > Domain/Tenant Settings.
Click the Edit Domain Details icon and check if the available DCs are operational.
If there are any stale DCs present, click on the delete icon to remove them.