I'm trying to fix my computer after my brother managed to mess it up. Currently WindowsUpdate is giving me troubles. It downloads all the updates but is unable to install them (and won't give an error message). It just says "the following updates could not be installed".
Now I searched around and found out that the problem could be solved by deleting or renaming the folder "CatRoot2", but windows tells me that it is being used by other processess. I shut down all antivirus and anti-spyware programs as well as deactivated WindowsUpdate but all to no avail.