'Test Credential' fails when using Windows Credentials against the MID server localhostIssue "Test Credential" against the target server which hosts the MID server, returning "Authentication failed". Enable debug mode in MID server by setting MID server properties "mid.log.level" to debug. Following message logged in MID server log 01/18/18 15:51:51 (525) Worker-Interactive:CommandPipeline DEBUG: PowerShellConnectionFactory: unauthorized connection LocalPowerShellSession created for key PowerShellSessionPoolKey[target:192.168.226.130&port:135&fixed_cred:&tag:&unique_id:470f2020073303009531d3369616c325&type:wmi] 01/18/18 15:51:51 (525) PowerConsole>std DEBUG: STDOUT: 01/18/18 15:51:51 (541) PowerConsole>std DEBUG: STDOUT: MI8D_COMMAND_COMPLETE 01/18/18 15:51:51 (541) PowerConsole>std DEBUG: STDOUT: 01/18/18 15:51:51 (541) PowerConsole>std DEBUG: STDOUT: MI8D_COMMAND_COMPLETE 01/18/18 15:51:51 (634) PowerConsole>err DEBUG: STDERR: ?Get-WmiObject : User credentials cannot be used for local connections 01/18/18 15:51:51 (634) PowerConsole>err DEBUG: STDERR: At C:\mid.kingston-10-17-2017__patch1-12-12-2017_01-03-2018_0843.windows.x86-64\agent\scripts\Powershell\WinRMAPI\Credentials\Credentials.psm1:70 char:20 01/18/18 15:51:51 (634) PowerConsole>err DEBUG: STDERR: + $results = gwmi <<<< win32_operatingsystem -computer $computer -credential $cred -impersonation 3 -authentication 6 -EA "Stop"; 01/18/18 15:51:51 (634) PowerConsole>err DEBUG: STDERR: + CategoryInfo : InvalidOperation: (:) [Get-WmiObject], ManagementException 01/18/18 15:51:51 (634) PowerConsole>err DEBUG: STDERR: + FullyQualifiedErrorId : GetWMIManagementException,Microsoft.PowerShell.Commands.GetWmiObjectCommand 01/18/18 15:51:51 (634) PowerConsole>err DEBUG: STDERR:CauseThis is expected behavior due to the Powershell command "Get-WmiObject" cannot use credentials against localhost. The PowerShell command use during test credential is something as below: Get-WmiObject -Class Win32_ComputerSystem -ComputerName $computer -Credential $cred When the MID server passes the command to the target server (in this case the same server box as the MID server on), the PowerShell command will return an error as the command cannot run on localhost. It expects the command to run to the remote computer.