1. Open Registry Editor.(Start-->Run-->Type regedit)
2. Move to the following Key.
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer
3. Create a new DWORD and name it DisallowRun.
4. Set the value 1 to Enable application restriction and set the value 0 to Disable the application restriction.
5. Then create a Sub-Key and name it
Note : careful with Regsiter Editor
