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.Issue <!-- div.margin { padding: 10px 40px 40px 30px; } table.tocTable { border: 1px solid; border-color: #e0e0e0; background-color: #fff; } .title { color: #d1232b; font-weight: normal; font-size: 28px; } h1 { color: #d1232b; font-weight: normal; font-size: 21px; margin-bottom: 5px; border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: #cccccc; } h2 { color: #646464; font-weight: bold; font-size: 18px; } h3 { color: #000000; font-weight: bold; font-size: 16px; } h4 { color: #666666; font-weight: bold; font-size: 15px; } h5 { color: #000000; font-weight: bold; font-size: 13px; } h6 { color: #000000; font-weight: bold; font-size:14px; } ul, ol { margin-left: 0; list-style-position: outside; } --> 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