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Editorial Team
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Asked: 2026-06-05T23:58:19+00:00

When working with powershell cmdlets, I often find that I need to set a

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When working with powershell cmdlets, I often find that I need to set a switch to a finite number of options, but I don’t know what options those are. I end up spending hours trying to google the option that I want. Is there a better way? I’ve tried looking at microsoft sites and Get-Help -examples, but none of those provide values for the switches that I want.

Here’s an example.

Set-SPWebApplication <a couple of switches...> -AuthenticationMethod <String>

What are the acceptable values for -AuthenticationMethod?

This is just one example, but I run into this problem a lot. Im thinking there should be something in the Get-Help that would illuminate me, but that is often unhelpful.

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1 Answer

  1. Editorial Team

    The easiest way I know is to pass an invalid option and you get a list in the error message:

    PS> Set-ExecutionPolicy foo

    Set-ExecutionPolicy : Cannot bind parameter ‘ExecutionPolicy’. Cannot convert value “foo” to type “Microsoft.PowerShell.ExecutionPolicy” due to invalid enumeration values. Specify one of the following enumeration values and try again. The possible enumeration values are “Unrestricted, RemoteSigned, AllSigned, Restricted, Default, Bypass, Undefined”.

    At line:1 char:20
    + Set-ExecutionPolicy <<<< foo
        + CategoryInfo : InvalidArgument: (:) [Set-ExecutionPolicy], ParameterBindingException
        + FullyQualifiedErrorId : CannotConvertArgumentNoMessage, Microsoft.PowerShell.Commands.SetExecutionPolicyCommand

    At this point you also have the type, so you can also use tab completion to get the valid values:

    PS> [Microsoft.PowerShell.ExecutionPolicy]::Tab

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