These two folders where from previous installs, when I try to delete them Windows says "Ineed permission to perform this action." "You reqiure permission from SYSTEM to make changes to this folder"Please noteI am admin on my machine(although I'm not logged in as admin)Under the Advance Security Setting for the folder I attempted to give my username full access control, but I get the "access denied"Any assistance would be great.

Have you changed any UAC settings?I had no problem deleting Windows.Old as a standard user with the default UAC settings. Just the standard UAC prompt and that was it.

Akame-san said: Have you changed any UAC settings?I had no problem deleting Windows.Old as a standard user with the default UAC settings. Just the standard UAC prompt and that was it.I believe this had something to do with my previous botched install. After doing a complete reinstall (I did not re-format the partition before hand so another "windows.old.ooo" folder was created) I was able to delete both "windows.old" folders.Thanks for the suggestion.Cheers