Hello,
Possibly the Server didn't complete the installation, the customer is logged in with a Power User without the permission Group Policy Creator Owners.
Missing permissions in the Power User account: Group Policy Creator Owners group
The installation of SEP client should be made with Administrator account.
Use an administrator account for the installation of SEP client and for accessing these utilities or add the appropriate permissions to the privileged user account (Power User).
Possibly simply logging in with Administrator account and attempting to open User Management Console and/or Group Policy Management Console (GPMC) might sort out the issue.
External reference: Delegate creation of Group Policy objects using GPMC
Hope that helps!!