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Windows Security Intelligence Update: How to clear Cache and Manually Update Microsoft Defender

Windows Security Intelligence Update

Windows Security intelligence updates are latest antivirus updates for Microsoft Defender’s antimalware defense. These updates improve the capacity of Microsoft Defender Antivirus and other Microsoft antimalware products to precisely identify threats by covering the most recent threats and continuously adjusting detection algorithms. This security intelligence integrates seamlessly with cloud-based security to provide quick and potent next-generation protection that is AI-enhanced.

Microsoft Defender, formerly known as Windows Defender and a part of Windows Security, has proven to be a powerful antivirus program for Windows 10 and 11. Therefore, if Windows Defender Antivirus is the only antivirus program you use, you should keep it updated to ensure that it can identify the most recent threats.

Learn more about Microsoft Defender: How to enable or disable Windows Defender Antivirus Periodic Scanning on Windows via Windows Security, How to restore quarantined files in Microsoft Defender AntivirusHow to find and remove Malware with Microsoft Defender Offlinehow to remove Microsoft Defender update on Windows 10 and Windows Server image, and how to view Microsoft Defender Antivirus update details on Windows 10 image (install.wim).

When Microsoft Defender can’t update automatically, your computer is left open to malware intrusions. You don’t need to worry if you’re having this problem; there are a couple different options for you to manually update Microsoft Defender.

Check if Microsoft Defender is Up to date

You must first determine whether Microsoft Defender is up to date. To check this, open Microsoft Defender, verify the current version, then compare it with the most recent security update from Microsoft.

Press the Windows key to open the Start menu, search for Windows Security, and select the result under best match.

Launching Windows Security in Start menu

In the Windows Security window, click Settings, then About in the bottom-left corner.

Windows Security Settings

Under System information, keep note of the Antimalware Client Version, the Engine Version, and the Antivirus Version.

Windows Security System Information

Go to the Microsoft Defender updates website and scroll down to the Latest security intelligence update section.

Check the Version (Antivirus Version)Engine Version, and Platform Version (Antimalware Client Version) against the ones specified in your Microsoft Defender System information.

If the versions shown under System information do not match, your antivirus must be updated.

How to Trigger a Microsoft Defender Update

If Microsoft Defender is not automatically updating, you can force it to do so by following these steps.

Open Windows Security from the Start menu and navigate to Virus & threat protection. Under Virus & threat protection updates, click on Protection updates.

Virus & threat protection updates

Click Check for updates, and Windows Security will try to find and download the most recent Microsoft updates.

Check for Windows security update

If there is a latest update, Microsoft Defender will automatically download and install it.

How to clear Cache and manually Update Microsoft Defender using Command Prompt

You can also manually initiate an update to download and apply the most recent security intelligence. To manually update Windows Defender, first clear the current cache and then initiate an update.

Press the Windows key to open the Start menu, search for cmd and run the Command Prompt as administrator.

Opening Command Prompt from the Start menu

Run the following commands one after the other.

cd %ProgramFiles%\Windows Defender

MpCmdRun.exe -removedefinitions -dynamicsignatures
Updating Microsoft Defender using Command Prompt
MpCmdRun.exe -SignatureUpdate

How to manually download updates from Microsoft

As an alternative, you can manually download Microsoft Defender’s most recent update files on your own.

Go to the Microsoft Defender updates website and scroll down to the Manually download the update section.

Select the appropriate 32-bit or 64-bit version of the Microsoft Defender Antivirus for Windows 10 and Windows 8.1 update files.

After the update has been downloaded, run the.exe file to start updating Microsoft Defender.

I hope you find this post helpful. If you have any question, feel free to leave them in the comment section below.

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