Microsoft Malware Protection Center (MMPC) is now Windows Defender Security Intelligence (WDSI). Watch out for even more info about threats and protecting you and your Windows computer.
Troubleshooting malware infections
Some threats can be harder to remove than others. If you're experiencing any of the following symptoms, you might need to take the additional steps listed on this page:
If you are experiencing any of these problems, you should try all of the steps on this page. You can also view virus and malware discussions on Microsoft Community to see if someone else has experienced your problem or has a solution.