Microsoft Defender Antivirus, Windows 11's free security program, actively protects your PC from harmful software. Keeping your Defender antivirus signature version up-to-date ensures the most current threat definitions are in place.
Microsoft Defender antivirus signature versions, also called definition updates, contain the latest information needed to identify and block emerging threats. Checking these signature versions regularly ensures your antivirus protection stays current.
For instance, as of early 2024, a recent signature version is crucial for defending against rapidly evolving ransomware strains.
⚡ Quick Answer
Open Windows Security, navigate to Virus & threat protection, and then click Protection updates. Your current Security intelligence version is displayed there. Alternatively, use the command Get-MpComputerStatus | select AntivirusSignatureVersion in Windows Terminal.
Method 1Check Signature Version in Windows Security
Click the Start button and type Windows Security, then open the app.
In Windows Security, click on Virus & threat protection.
Look for the section called Virus & threat protection updates, then click Protection updates.
You will see your current Security intelligence version (this is the signature version).
You can check your Microsoft Defender signature version in Windows Security by opening the app. Click on ‘Virus & threat protection,’ then ‘Virus & threat protection updates,’ and you’ll find the ‘Security intelligence version,’ which is your current signature version.
Windows Security Virus and threat protectionProtection updates virusProtection updates virus details
Method 2Check Signature Version Using Command Prompt or PowerShell
Right-click the Start button and choose Windows Terminal (or open Command Prompt or PowerShell).
Copy and paste the command below, then press Enter:
Checking your Microsoft Defender signature version is quick using the Command Prompt or PowerShell. Open Windows Terminal as an administrator, then copy and paste the command `Get-MpComputerStatus | Select-Object AntivirusSignatureVersion` and press Enter to see your current signature version.
📝Good to Know
Microsoft Defender Antivirus signature version displays the date the antivirus last updated and the specific signature version number, which helps verify the antivirus has the latest protection against new threats.
Protection updates virus terminal details
Why This Matters
Automatic Updates: Defender updates itself automatically, but it’s good to check the version sometimes.
Security: The signature version tells you how current your protection is.
Easy to Check: Use the Windows Security app or a quick command—both work well!
Stay Safe: Knowing your signature version helps you be sure your PC is protected.
Knowing your Microsoft Defender signature version matters because it confirms your PC has the latest protection against new threats. While Defender updates automatically, checking the version ensures your security intelligence is current, helping you stay safe online.
That’s all! Now you know how to check your Microsoft Defender Antivirus signature version on Windows 11.
Is Windows Defender signature based?
Endpoint Security Windows Defender is a signature-based antimalware system. These signatures provide the definitions Windows Defender uses to identify malware on a Windows system.
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions.
Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
No comments yet — be the first to share your thoughts!