A console app with the following code never exits... RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create(); PSSnapInException error; runspaceConfiguration.AddPSSnapIn("Microsoft.DataProtectionManager.PowerShell", out error); using (var runspaceInvoke = new RunspaceInvoke(runspaceConfiguration)) { Collection results = runspaceInvoke.Invoke("Get-ProtectionGroup -DPMServerName " + args[0]); }

Answered my own question, you have to call Disconnect-DPMServer before exitting powershell. Documented in the init script provided \Program Files\Microsoft DPM\DPM\bin\DpmCliInitScript.ps1