Hi @CristinaLupa-7377,
Please check if the Kerberos realm name in Active Directory is in lowercase. This problem can happen if that is the case. If this is the issue you will be able to complete the Kerberos wizard, but face this error later.
Things to try for the account receiving the error:
- Enable the account and reset the password. (See if you receive any error while enabling.)
- Extract the user's metadata (repadmin /showobjmeta )
- Query the object properties and check to see if the same SID might be attached to two different objects.