Privacy and Security Manually Update Microsoft Defender Antivirus Signature Version in Windows 11

This tutorial will show you how to manually check and update the Microsoft Defender Antivirus security intelligence to the latest signature version in Windows 10 and Windows 11.

Microsoft Defender Antivirus is an antivirus software that is included in Windows 11 and can help protect your device from viruses, malware, and other threats.

Microsoft continually updates security intelligence in antimalware products to cover the latest threats and to constantly tweak detection logic, enhancing the ability of Microsoft Defender Antivirus and other Microsoft antimalware solutions to accurately identify threats. This security intelligence works directly with cloud-based protection to deliver fast and powerful AI-enhanced, next-generation protection.

To help ensure your antimalware solution detects the latest threats, they get updates automatically as part of Windows Update at least once a day.

You can also manually check for and download the latest security intelligence update if needed.

References:








1 Open Settings (Win+I).

2 Click/tap on Windows Update on the left side, and click/tap on Check for updates on the right side. (see screenshot below)



3 If a new Security Intelligence Update for Microsoft Defender Antivirus is available via Windows Update, it will automatically download and install by default. (see screenshots below)






1 Open Windows Security.

2 Click/tap on Virus & threat protection. (see screenshot below)


3 Under Virus & threat protection updates, click/tap on the Protection updates link. (see screenshot below)


4 Click/tap on the Check for updates button. (see screenshot below)


5 If a new Security intelligence version is available, it will automatically download and install. (see screenshot below)






1 Open Windows Terminal, and select Command Prompt.

2 Copy and paste the command below into Windows Terminal, and press Enter. (see screenshot below)


3 If a new Signature update (Security intelligence version) is available, it will automatically download and install.






1 Go to the Security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware page at Microsoft in your web browser.


2 Scroll down to the Manually download the update section. (see screenshot below step 3)

3 Click/tap on the 32-bit, 64-bit, or ARM "Definition version" download link for Microsoft Defender Antivirus for Windows 11, Windows 10, Windows 8.1, and Windows Server for your system type. (see screenshot below)


4 Save the mpam-fe.exe file to your desktop. (see screenshot below)

This specific mpam-fe.exe file download will only install the security intelligence update version shown on the download page. It will not install a future newer version.

5 Run the downloaded mpam-fe.exe file to update the security intelligence version.


That's it,
Shawn Brink