I wanted to prevent one of my users from running QuickBooks, so I added a "Don't run specified Windows applications" from Administrative Templates group policy. When I first linked it, though, I didn't change the default Security Filtering, so the GPO applied to all users. I changed the filtering to the specific user. However, all users still got the message "The operation has been cancelled due to restrictions in effect on this computer." So I removed the GPO completed, but users are still getting the message. I have even done a System Restore on the workstation with QuickBooks, to no avail.
Are there any additional steps to completely removing this GPO and its affects? For now we can still use the Command Line to get to the program, but obviously that doesn't work long term.