Malware infections can sometimes block anti-malware utilities or even make the computer unbootable, Microsoft has now came up with a free "Standalone System Sweeper" utility enabling users to get rid of those nasty infections allowing them to perform offline scans to remove viruses, trojans and rootkits effectively.

Microsoft Standalone System Sweeper allows users to download latest definitions and make a bootable CD, DVD, or USB stick which when booted from loads the Windows Preinstall Environment (Windows PE) to run the scan and clean infections.