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Access Denied when saving a file in Windows 7

I installed Windows 7 fresh on a new machine. Now when I unarchive (winrar or 7z etc. ) to Program files (x86) (for example), access denied. Even if I copy a file to a folder I installed an app to it is still access denied.

I checked the security, it looks like full control is given to the creator - this is weird as I never ran across this before (same version of Windows 7 - its just a fresh install after some new hardware).

It is the same effect as if I was editing the hosts file, and you do not use "run as admin" you will not be able to save it, yo will have to save it somewhere else. This "file copy" issue I ran into is the same.

I could change all these permissions, however this is something I never had to do before. I am the admin, why did the install, not give me "full control"?

How can this be globally fixed.

I cannot change the permissions - they are greyed out - so that is weird as well. If I was a standard reason, It would make sense, however, again, I am the admin.