UPDATED Microsoft on Thursday released an upgrade to its Windows Defender application, initially raising the version number from 1.1 to 7.0. The company later explained the version jump was a mistake. The release bring user interface improvements and new malware detection engine.
Windows Defender supports 64-bit operating systems, but no longer runs on Windows 2000, because Microsoft says the aging operating system has left mainstream support. WGA checking will also be enforced, meaning that Windows Defender will only remove "Severe" threats from computers that do not pass validation.
Windows Defender 1.1.1593 can be downloaded from FileForum.