<PowerShell> Start-MpScan -ScanType FullScan errors out after 30 minutes

Question

This is an issue with either defender or powershell. What I'm trying to do, is run a powershell scan from a script using the command Start-MpScan -ScanType FullScan, using PowerShell ISE and it constantly fails after exactly 30 minutes. The error that is raised isn't very helpful either: A general error occurred that is not covered by a more specific error code. With this type of error, I can't even tell where is is coming from (Defender / PowerShell / other). Any help appreciated.

Start-MpScan : A general error occurred that is not covered by a more specific error code.

At line:1 char:1

• Start-MpScan -ScanType FullScan

    + CategoryInfo          : NotSpecified: (MSFT_MpScan:ROOT\Microsoft...der\MSFT_MpScan) [Start-MpScan], CimException

    + FullyQualifiedErrorId : MI RESULT 1,Start-MpScan

Answer 1

I'm not a powershell user, but can advise you that questions about its use are better handled on the TechNet forums.

When searching for MpScan (which I was not familiar with), I found this: https://technet.microsoft.com/en-us/library/dn433288.aspx?f=255&MSPPError=-2147217396

It appears that your command may be incomplete based on the error and what you noted as your command.

I recommend that you post your question here:

https://social.technet.microsoft.com/Forums/scriptcenter/en-US/home?category=scripting

-steve