Configuring IIS with Powershell - Enable Forms Authentication

Question

My IIS looks like this:

Sites ->
        Default Web Site ->
                            MyWebApp

Then the question is: How do I enable Forms Authentication on MyWebApp? I mange to change or edit Anonymous Access, Basic, and Windows Auth. However, Forms Auth is not that easy. How do I do this in Powershell?

I'm able to read the setting this way:

(Get-WebConfiguration system.web/authentication 'IIS:\sites\Default Web Site\MyWebApp').Mode

I'm having trouble or no luck with Set-Webconfiguration, or Set-Webconfigurationproperty. I find these cmdlets hard to figure out.

Change happens in web.config, at least the web.config updates when I hit Enable or Disable on Forms Authentication at the IIS manager. Any clues and tips are highly appreciated.

Nathan · Accepted Answer · 2016-05-03 00:57:42Z

4

Or with a one liner:

Set-WebConfiguration system.web/authentication 'IIS:\sites\Default Web Site' -value @{mode='Forms'}

edited May 3, 2016 at 0:57

Nathan

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answered Oct 25, 2012 at 8:52

Shay Levy

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dugas · Accepted Answer · 2012-10-24 22:29:48Z

2

You pipe the authentication configuration settings to Set-Webconfiguration giving the appropriate filter after you modify your properties:

$config = (Get-WebConfiguration system.web/authentication 'IIS:\sites\Default Web Site')
$config.mode = "Forms"
$config | Set-WebConfiguration system.web/authentication

Note: Backup your config before trying this.

answered Oct 24, 2012 at 22:29

dugas

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3 Comments

AUSTX_RJL Over a year ago

Here's a more complete PowerShell IIS setup script that includes the same idea. github.com/jefflomax/configure-iis-webapps-powershell

Rexovas Over a year ago

any idea how to also configure the SSL/Cookie settings?

dugas Over a year ago

@Rexovas - system.web/httpCookies

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