Why is invoke-command and new-pssession not working? - windows

Question

I have no idea why this isn't working. Any ideas? I honestly don't know what else I can try.
I plan to add it to a script that prompts the user for a computername / domain creds but I can't get it to work in a shell window for starters.
Here's the line:
Invoke-Command -Session New-PSSession -ComputerName server001 -ScriptBlock {shutdown.exe /r -t 0}
Here's the error:
Invoke-Command : Cannot bind parameter 'Session'. Cannot convert the "New-PSSession" value of type "System.String" to
type "System.Management.Automation.Runspaces.PSSession".
At line:1 char:25
+ Invoke-Command -Session New-PSSession -ComputerName server001 -Scrip ...
+ ~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Invoke-Command], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.PowerShell.Commands.InvokeCommandCommand
Sorry for not having anything further to add to this but I'm still trying to learn PowerShell and need guidance.

Answer 1

As the error indicates, the -Session parameter accepts arguments of type PSSession - and to create such an object we need to invoke New-PSSession (not just pass it's name as an argument):
$session = New-PSSession -ComputerName computer01
Invoke-Command -Session $session { ... }
If you don't plan on reusing the session later, you can simply pass the computer name directly to Invoke-Command, it'll handle session management for you implicitly:
Invoke-Command -ComputerName computer01 { ... }