how to allow non-admin user to log on through terminal services
The simplest way to resolve this issue is to add your thin client users into the Remote Desktop Users Group (or any other group for that matter) then grant that OU the "Allow log on through Remote Desktop Services" ("Terminal Services" in pre 2008 R2 releases) via: Start > Run > gpedit.msc Expand: Computer Configuration > Windows Settings > Security Settings > Local Policies > User Rights Management Select: Allow log on through Remote Desktop Services Add Remote Desktop Users to the Policy. To apply the changes: Start > Run > gpupdate /force