Was fooling around with my system earlier, and accidently denied control to the "Creator Owner" for my Antivir program folder. Now, the whole folder is hidden / locked, and I can't do anything about it, even when logged in as Admin. I can't even uninstall it as the folder can't be found.

Anyone knows how I can get around this restriction?

if you right click on the folder and go to properties then click the security tab you should get the permissions set to the folder. If you select advanced then owner you can take ownership of the folder allowing you access. once you have done this you should have full control over the folder