It should enable group policy on your computer.
System level tasks need admin permission, right-click that file and open it via Admin. Simple save the file on your computer and remember just double-clicking wont do nay magic. the file adds value to registry so that you can find it and open it. Get gpedit enabler file, simply run it as admin privilege and you’re done.
You’ve got 2 options, first option is rather easy, one downloads this file and run it.