Ever encountered a problem in which you can’t open Group Policy Editor even using administrator account. When you try the command gpedit.msc or other commands with msc extensions like services.msc, devmgmt.msc, compmgmt.msc etc. simply an error message shows up which says:
Access is denied.
Try opening the editor by double clicking the gpedit.msc inside the system32 folder but you will encounter the same error message.