Win Update KB890830 Windows Malicious Software Removal Tool 5.138 - Dec. 9

Windows Malicious Software Removal Tool (MSRT) 5.138 helps remove malicious software from computers running any of the following operating systems:

• Windows 11
• Windows Server 2022
• Windows 10
• Windows Server 2019
• Windows Server 2016
• Windows 8.1
• Windows Server 2012 R2
• Windows Server 2012
• Windows 7

Microsoft generally releases MSRT monthly as part of Windows Update or as the standalone tool. Use this tool to find and remove specific prevalent threats and reverse the changes they have made (see covered threats). For comprehensive malware detection and removal, consider using Microsoft Safety Scanner.

This article contains information about how the tool differs from an antivirus or antimalware product, how you can download and run the tool, what happens when the tool finds malware, and tool release information. It also includes information for the administrators and advanced users, including information about supported command-line switches.

Note In compliance with the Microsoft Support Lifecycle policy, MSRT is no longer supported on Windows Vista and older platforms. For more information, go to Microsoft Support Lifecycle.



Remove specific prevalent malware with Windows Malicious Software Removal Tool (KB890830)

Manual download:

• Windows Malicious Software Removal Tool 32-bit
• Windows Malicious Software Removal Tool 64-bit
• KB890830 MSU file from Microsoft Update Catalog

How to Use Malicious Software Removal Tool in Windows