CODEWITHSUNDEEP
powershellremotinginvoke-command
Parveen Kumar
Parveen Kumar

Reputation: 449

PowerShell Remoting - Invoke-Command not Returning Output

I am running following command remotely from PowerShell in Admin mode. This gets the status of App Pool (in IIS) from remote machine.

$result = Invoke-Command -ComputerName $servername -ScriptBlock {
    param($appPoolName) 
    Get-WebAppPoolState -Name $appPoolName
} -ArgumentList $appPoolName | select value

If I am passing correct values I am getting proper data in $result but if I am passing invalid server name, I am getting below error.

"Connecting to remote server failed with the following error message : WinRM cannot process the request."

The issue is I am not getting anything in $result and even this is not going to Catch block. There is no way to identify if the command run successfully or not.

Please provide any pointers on how to get the command output in $result.

Note: I am the admin on remote machine and WinRM has been enabled.

Upvotes: 1

Views: 1263

Answers (2)

Manu
Manu

Reputation: 1742

Catch error with try/catch by adding -ErrorAction Stop and display last error with $error[0]

Try{
    $result = Invoke-Command -ComputerName $servername -ErrorAction Stop -ScriptBlock {
        param($appPoolName) 
        Get-WebAppPoolState -Name $appPoolName
    } -ArgumentList $appPoolName | Select-Object value
}
Catch{
    $result = $error[0]
}

Upvotes: 1

BenH
BenH

Reputation: 10044

In order to catch the error, it needs to be terminating. You can force this with -ErrorAction Stop. 

try {
    $result = Invoke-Command -ComputerName $servername -ScriptBlock {
        param($appPoolName) 
        Get-WebAppPoolState -Name $appPoolName
    } -ArgumentList $appPoolName -ErrorAction Stop | select value
}
catch {
    $result = [pscustomobject]@{"value"="Not Found"}
}

Upvotes: 1

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