Symptoms

Windows - Active Connections probe returns error: Exception calling ".ctor" with "2" argument(s): "Cannot process argument because the value of argument "userName" is not valid.

 

Release

Post Madrid

 

Cause

This issue normally happens when remoteExecution is on for "Windows - Active Connections" probe, and 

MID Server parameter mid.powershell.use_credentials is set to false.

 

 

Resolution

Either do:
navigate to Discovery Definition > Probes > Windows - Active Connections > uncheck "Execute script remotely".

or:
navigate to MID Server > Servers > open record "DPWDEV", check property: mid.powershell.use_credentials, either delete this property, or set this to true