Run elevated powershell command from command prompt

Question

powershell.exe Start-Process powershell.exe "set-executionpolicy" -Verb runAs

The above command will run a powershell window as admin and execute the command before it, however, if I want to make it say set-executionpolicy bypass, it will error out. How can I pass this parameter through the top command?

Below is the error I get when I pass said parameter:

    Start-Process : A positional parameter cannot be found that accepts argument
'bypass'.
At line:1 char:1
+ Start-Process powershell.exe set-executionpolicy bypass -Verb runAs
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [Start-Process], ParameterB
   indingException
    + FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.PowerShell
   .Commands.StartProcessCommand

And if you put it under quotation marks? "set-executionpolicy bypass" — Igor
– Igor, Commented May 11, 2017 at 14:28

Vesper · Accepted Answer · 2017-05-11 14:15:31Z

1

Start-Process accepts an array of arguments in order to pass into created process. So, in order to launch an elevated Powershell that would execute a Set-ExecutionPolicy cmdlet you need to wrap the arguments into an array.

start-process -filepath powershell.exe -argumentlist @('-command','Set-ExecutionPolicy Bypass') -verb runas

As a side note, you probably want to set execution policy with -scope argument for it to actually be effective once that process ends.

answered May 11, 2017 at 14:15

Vesper

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2 Comments

Aaron Over a year ago

That works. Thank you. Can you explain the -scope part and where to put it?

Vesper Over a year ago

get-help set-executionpolicy :) -scope determines which policy is to be modified. Values usable when starting elevated are localmachine and machinepolicy, the second can be overridden by domain policy IIRC.

Mark Wragg · Accepted Answer · 2017-05-11 14:04:22Z

1

You can use the –ExecutionPolicy switch directly on PowerShell.exe to bypass the execution policy.

powershell.exe –ExecutionPolicy Bypass

answered May 11, 2017 at 14:04

Mark Wragg

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1 Comment

Patrick Burwell Over a year ago

NONE of these answered the ORIGINAL question. How do you run from the "run" command an elevated PowerShell session ("Windows cannot find start-process)? You HAVE to use cmd /c originally, so how then do you run an elevated PowerShell that doe snot close from 'cmd/c'? It appears it's NOT possible.

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