'Set-MpPreference' is not recognized as the name of a cmdlet

Question

Hi,
I am trying to modify a Windows Defender parameter due to performance problems on Windows Server 2012, but when I execute the Set-MpPreference command, it gives me the error:

PS C:\Windows\system32> Set-MpPreference -DisableCpuThrottleOnIdleScans $false
Set-MpPreference : The term 'Set-MpPreference' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:1
+ Set-MpPreference -DisableCpuThrottleOnIdleScans $false
+ ~~~~~~~~~~~~~~~~
     + CategoryInfo : ObjectNotFound: (Set-MpPreference:String) [], CommandNotFoundException
     + FullyQualifiedErrorId : CommandNotFoundException

How can I resolve this error?

Thanks in advance

Answer 1

The Defender PowerShell module isn't available in Server 2012, but you can install it and run it in Passive mode.

Is the Defender for Endpoint package installed?

[https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/configure-server-endpoints?view=o365-worldwide#windows-server-2012-r2-and-windows-server-2016

Answer 2

Hello,

You may need to import the module in Windows 2012, by running first:

Import-Module Defender

Also ensure that you are using the 64bit version of powershell at:

C:\windows\sysnative\WindowsPowershell\v1.0\powershell.exe

--If the reply is helpful, please Upvote and Accept as answer--

Answer 3

Double post