Applications - Restrict Users from Running Specific Applications

This setting allows you to specify applications and filenames that users are restricted from running.
Open your registry and find the key
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer]

Create a new DWORD value and name it "DisallowRun" set the value to "1" to enable application restrictions or "0" to allow all applications to run.

Then create a new sub-key called [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer\DisallowRun] and define the applications the are to be restricted.

Creating a new string value for each application, named as consecutive numbers, and setting the value to the filename to be restricted (e.g. "regedit.exe").