Long story short: During the transition of antivirus software to Windows Defender Antivirus (WinDefend), I don’t want Windows Defender remediation on threats it might find. Later, when I have more information about potential threats, I can always choose to remediate that threat, e.g. quarantaine or remove it. Unfortunately, there is no PowerShell cmdlet to configure this. Here is how to (temporarily) turn off routine remediation.
Windows Defender
How-to fix “Get-MpComputerStatus : The extrinsic Method could not be executed.”
This is how I resolved the error message “Get-MpComputerStatus : The extrinsic Method could not be executed.“, in my specific situation.