When the registry permissions need reset this is the way to go. Today I used this tool, SubInACL, to troubleshoot an IE7 won’t install issue where the installer log indicated that specific keys couldn’t be written to. Upon further investigation the keys were completely absent of any visible permission and I couldn’t change a thing including assuming ownership.
What’s a fella to do? Go to Aaron Stebner’s blog is what! This SubInACL tool, a Windows Resource Kit app., along with the cmd instructions provided worked fairly quickly (under 5 minutes) and achieved the exact result desired.