To download the Microsoft Forefront Client Security, the Microsoft Forefront Endpoint Protection 2010, or the Microsoft System Center 2012 Endpoint Protection antimalware definition update file (Mpam-fe.exe) for 32-bit (x86-based) versions of Windows, click the following link:

This article describes antimalware update package for Microsoft Defender in the OS installation images (WIM and VHD files). This feature supports the following OS installation images: Windows 11. Windows 10 (Enterprise, Pro, and Home editions) Windows Server 2022. Windows Server 2019.

Download the Microsoft Security Essentials virus and spyware definition update file that is appropriate for your version of Windows: Download the file for a 32-bit (x86-based) version of Windows. Download the file for a 64-bit version of Windows.

The latest beta malicious software definition update gives you early access to definitions for critical infections that the latest release version of the definitions does not detect or clean. You can use these beta definitions to clean infected computers.

This article describes an anti-malware platform update package for the following clients on the Windows 10 and Windows Server 2016 operating systems: Microsoft System Center 2012 R2 Configuration Manager Endpoint Protection Service Pack 1 (SP1) clients.

The Microsoft Defender Offline scan will automatically detect and remove or quarantine malware. Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

To download the Microsoft Forefront Client Security, the Microsoft Forefront Endpoint Protection 2010, or the Microsoft System Center 2012 Endpoint Protection antimalware definition update file (Mpam-fe.exe) for 32-bit (x86-based) versions of Windows, click the following link:

This article discusses how to update the Malware Protection Engine. The article provides details about prerequisites, restart requirements, removal information, and how to verify that the updates were installed correctly.

The tool removes malicious software from an already-infected computer. Antivirus products block malicious software from running on a computer. It is significantly more desirable to block malicious software from running on a computer than to remove it after infection.

Microsoft security help and learning. If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.