Don't run specified Windows applications
User Configuration\Administrative Templates\System
Prevents Windows from running the programs you specify in this policy.
If you enable this policy, users cannot run programs that you add to the List of disallowed applications.
This policy only prevents users from running programs that are started by the Windows Explorer process. It does not prevent users from running programs, such as Task Manager, that are started by the system process or by other processes. Also, if you permit users to gain access to the command prompt, Cmd.exe, this policy does not prevent them from starting programs in the command window that they are not permitted to start by using Windows Explorer.
When both the Run only allowed Windows applications policy and the Don't run specified Windows applications policy are enabled, they are both applied. Users can only run the programs listed in the Run only allowed Windows applications policy. However, if a program in that list is prohibited by the Don't run specified Windows applications policy, it does not run.