April 14th, 2014

PowerTip: Update Windows Defender with PowerShell

Doctor Scripto
Scripter

Summary: Use Windows PowerShell cmdlets in Windows 8.1 to update the antivirus definitions.

Hey, Scripting Guy! Question How can I use Windows PowerShell, rather than navigating the GUI, to force updates for Windows Defender?

Hey, Scripting Guy! Answer In Windows 8.1, you can execute the following cmdlet and bring the Windows Defender up to date:

Update-MPSignature

Author

The "Scripting Guys" is a historical title passed from scripter to scripter. The current revision has morphed into our good friend Doctor Scripto who has been with us since the very beginning.

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