First make sure user account is a member of Blocked Apps
If user account is amber of Blocked Apps Users and the error
not solved you have to follow the following steps.
Log admin account Use Registry Editor to remove the
appropriate User name keys from the following registry key:
To remove profiles, remove the
· Use My Computer or
Windows Explorer to remove the appropriate WindowsNT \Profiles\User name folders.
To remove all profiles, remove the Windows\Profiles folder.