>>DomainProfile, StandardProfile, PublicProfile -> are protected by Secure Profile. Disable Secure Profile and you can access these keys. No, it does not work! Does SYSTEM have Full Control rights ? Yes Are you able to delete a rule from WFwAS (wf.msc) ? No = no access at all! error: you do not have the authorizations etc.. What about WinFirewall service ? Same as in your image.