This problem can be caused by multiple things. My computer stopped being able to run exe files on a single power user account - the other accounts were fine.
My problems came from a website which popped up a version of Safe PC Guard or whatever, it is a malicious software which pretends to be an anti-virus
If you press the ok or close button it invisibly installs itself, keeps you from opening control panel items, task manager, or any anti virus software. It is strange to get rid of and I have gotten it on my Pc way too many times.
This was the first time that particular maleware bs actually messed with my exe file extensions and stuff. Usually it just screws my system in other ways. This time was different because I finally recognized that the 'X' (or close button) on the malicious software actually functions as an install, so to press any buttons will hose your system.
I opened task manager immediately and closed Firefox
, which the software hijacks temporarily to make a fake anti-virus scan window. If you kill the Firefox process, The malicious PC Guard dies right away. For some reasons, that time it also messed up my EXE file extensions, I couldn't run anything.
FYI - the doug knox Windows XP fix also works for Vista. Since applying it, every time the malicious fake-virus check program pops up I kill Firefox and it dies without installing - there have been no EXE file extension problems since I used the doug knox fix, honestly, that site helped me a lot.
Does anyone know 1) why and how the exe extensions get changed in this problematic way and 2) how the hell can I keep Safe PC Guard, or whatever it calls itself on any given hack day, far far away from system? I use many virus protect programs, and none of them seem able to catch this damn thing in the act.
3) Why is it that when the PC Guard hacks my system and I go into my user/appdata/local/ and local/temp folders and delete the damn randomly named EXEs that keep that thing running, NO virus or utility program anywhere seems to recognize them as damaging! I have tried Norton, mcafee, kaspersy, avast
, avgfree, and many others. I even used that website that lets you upload programs to check them with 50+ male-ware virus checkers. NONE of the many, many exes that cause PC Guard to hack a system get caught by protection software. Why why why?