Tamvik, You may want to check out the Microsoft website and look for critical updates. This is a periodic download that MSFT provides for free. I use the Symantc products and often an upgrade will throw one or more things out of whack. The critical update usually fixes this. I would also recommend getting the Personal Firewall and the System works. It is your system, but the treats and hassles of getting a virus off your system make it worth it in my opinion.