Restart the computer.
After you complete the steps, users will no longer be able to launch the application you specified. You can always repeat the steps to block access to other desktop applications.
If you want to undo the changes, you can use the same instructions outlined above, but on
steps 4, right-click the hash of the app currently blocked, and select the
Delete option.
If you are disabling applications to prevent users from making system changes, you can use these instructions to restrict access to PowerShell or Command Prompt. You can also restrict access to the Task Manager and Registry.