1 - Microsoft Malicious Software Removal Tool(KB890830) 1.6 The Microsoft Windows Malicious Software Removal Tool checks Windows XP, Windows, and Windows Server 2003 computers for and helps remove infections by specific, prevalent malicious software including Blaster, Sasser, and Mydoom. License: Freeware OS: 9x/NT/2000/ME/XP Size: 0.594 MB