After installing GPOAdmin, you login to the GPOAdmin console and are prompted to select a Configuration Store, Active Directory, AD LDS or SQL. Neither option can be selected and you cannot click Next.
原因
When GPOAdmin is first installed, only the Service Account or a member of the Enterprise Admins group can login to the console.
解决办法
Login as the GPOAdmin Service Account or as an account that is a member of the Enterprise Admins group in AD.