jomjo

On the other hand... d6bmg might be right if referring to acrobat and not winrar. Stirred up my memory and in fact the culprit might be a portable version of acrobat... nns, is it possible? I'm still testing.

There's nothing wrong with winrar. I wasn't being sarcastic when i said they were super efficient. The answer was provided by winrar support. It seems acrobat reader (genuine and free) is messing up temp folder permissions for other programs also.

Well, those guys at winrar are super-efficient. Got the answer: Please check if you have Adobe Acrobat XI installed. We received several reports from users that Adobe Acrobat XI changes permissions of default Windows temporary folder, resulting in incorrect temporary file processing in WinRAR and other applications. You can see independent confirmations here: http://forums.adobe.com/thread/1144290?tstart=0 http://answers.microsoft.com/en-us/windows/forum/windows_8-security/cant-install-any-applications/7fc00c13-c91e-4288-99f3-133f957930c2 Users confirmed that it helped to manually create another folder like C:\Temp and assign it as a new WinRAR folder for temporary files in WinRAR "Settings/Paths" dialog. Another option is to restore the original permissions of system temporary folder, but Acrobat can corrupt them again later.

I'm having the exact same issue. Tried on 2 different computers, and two different versions of winrar. There was in fact a change in winrar behavior and it's driving me crazy. @nns: Did you find a solution? Before it happened, did you performed a rebuild index for windows search or shared a drive or partition (not the system one) where the rar files are stored? These are the only things I did before the change... @ RayMark: any insight? Thanks!