AVG seems to have quarantined the two Trojan malware but I can't delete the folders:

Program Files > Google > Desktop > Install > {string of numbers}

Changing Ownership and Permissions doesn't do anything except get Windows Explorer rebooting. Or, there's a pop-up message saying access is denied.

There's a Lock icon on the top, Google, folder.

Has anyone found a way to delete a rooted-in folder in Program Files?


Update: The advice was overwhelming to reinstall the OS, so I did that. I backed-up only file formats that were safe, like .odt, .jpg, .avi or .mpg. Those went to a different hard drive and I ran two checks of those files with AVG. Then I performed a clean install which first formatted the infected drive. So far so good, and thanks, everyone, for taking the time to lend advice.

P.S. I was certain this wasn't a duplicate question because I searched for other references to that string of folders: Google > Desktop > Install... Search didn't reveal any references to it. So I asked how to remove that Folder and its contents. I may have received a duplicate solution to the problem -- format and start over -- but I didn't see a duplicate of my question.

marked as duplicate by Tog, Breakthrough, Mokubai, allquixotic, Shekhar Sep 11 '13 at 23:52

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • what message do you get when you try to delete the file? – Drew Chapin Sep 10 '13 at 0:33
  • A program called Unlocker is very helpful – Ramhound Sep 10 '13 at 0:41
  • 2
    Just as some advice, I (and most seasoned computer techs) would recommend re-installing the operating system. Even if you get any side-effects from the virus to go away, it may only be temporary. Re-installing the operating system is the only sure way to remove a virus from your computer. You should have backups of your important files, so you can just revert back to those, unless they are infected. – David Sep 10 '13 at 1:08
  • To druciferre:The error message pop-up says "Error Applying Security [line] An error occurred while applying security information to [line] C:Program Files/Google... [line] Access denied" – user241094 Sep 10 '13 at 1:33

In malware infections, the overwhelming consensus is to erase everything and do a clean reinstall of the operating system.

You should always perform backups periodically, so in case of an infection you can count on your safe backed-up data. If that is not your case, you can't assume your files are safe, .doc files can contain macro viruses and even media files can contain malware.

In case you don't have a backup for some important file, and it's impossible to re-download it from the original source, you should copy it to an external drive, then use Virus Total to scan the file using 40+ different antivirus engines, then use a linux Live CD to copy it back to your newly-installed OS, because even the external drive could have been compromised when you backed up the files.

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