Configure Defender to check for signature updates before scanning

Here’s a tip from my colleague Ed Wilson (the Microsoft Scripting Guy) about how to use PowerShell to configure Defender to check for signature updates prior to running a scan on Windows 8.1:

Question: You found out that several of your client workstations do not check for signature updates prior to performing a scan on the Windows 8.1 clients. You want to fix this. How can you use Windows PowerShell to do this?

Answer: Use the Invoke-Command cmdlet to run the Set-MPPreference cmdlet on the remote workstations. This technique appears her:

Invoke-Command -script { Set-MpPreference -CheckForSignaturesBeforeRunningScan:$true} -ComputerName c1,c2,c3

           NOTE: you will need to run the above command with admin rights

Mitch Tulloch is a nine-time recipient of the Microsoft Most Valuable Professional (MVP) award and a widely recognized expert on Windows administration, deployment and virtualization.  For more information see http://www.mtit.com.

Ed Wilson is the bestselling author of eight books about Windows Scripting, including Windows PowerShell 3.0 Step by Step, and Windows PowerShell 3.0 First Steps. He writes a daily blog about Windows PowerShell call Hey, Scripting Guy! that is hosted on the Microsoft TechNet Script Center; for more PowerTips check out the Hey, Scripting Guy! blog.

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