Two days ago my IE stopped working. Shortly after, I realized that iTunes could no longer connect to the internet either. However, Mozilla Firefox connected with no problem.
I finally decided I needed to at least fix the problem in iTunes. I ran a diagnostic, and it said I had a problem with my proxy settings. So I clicked on a help link in iTunes. It gave me step by step instructions on how to turn off my proxy stuff in Control Panel>Internet Options>Connections>LAN Settings. After I unchecked this box (I'm not sure why it was checked in the first place), everything started working again. For a while, I was satisfied. But my curiosity got the better of me.
I did a google search for "can a virus change your proxy settings", and one of the results had someone talking about a virus they had in their rundll32.exe file that did just that. After doing various searches, I found that people that had a virus in this file had exactly the same problem I had, and that Mozilla Firefox still worked while other internet-using applications did not. I opened my Windows Task Manager, and I saw that I have three rundll32.exe files. One is labeled as having a memory of 2,092 K, one as 1,944 K, and one as 1,204 K. I was not aware I could be running multiple rundll32.exe files.
So is there a way for me to check to see if I have a virus? I ran a full scan with my McAfee software and it detected nothing. If my computer is infected, how can I fix it?
Thanks a lot,