Anonymous access and NTLM authentication in IIS

authenticationiismixed-authenticationntlm

I have a server set up with IIS, and my site has some pages which should allow anonymous access and some pages which should require the "Integrated Windows authentication". On the Authentication Method screen in IIS it looks like you can enable both "Integrated Windows Authentication" and anonymous access, but the documentation I've read seems to indicate you can only use one or the other.

Does anyone know how to allow anonymous access to some pages and require NTLM authentication on others?

Thanks,

Best Answer

Enabling both Anonymous Access and Windows Authentication means it will try Anonymous Access first, if that fails it will fall back to Windows Authentication. If you need to do both, you can either do as suggested with the web.config, or put the pages that need protection in a sub-folder in IIS, and enable only windows authentication on that.

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C# – An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode

The 2^nd option is the one you want.

In your web.config, make sure these keys exist:

<configuration>
    <system.webServer>
        <validation validateIntegratedModeConfiguration="false"/>
    </system.webServer>
</configuration>

Config Error: This configuration section cannot be used at this path

I had the same problem. Don't remember where I found it on the web, but here is what I did:

Click "Start button"
in the search box, enter "Turn windows features on or off"
in the features window, Click: "Internet Information Services"
Click: "World Wide Web Services"
Click: "Application Development Features"
Check (enable) the features. I checked all but CGI.

btw, I'm using Windows 7. Many comments over the years have certified this works all the way up to Windows 10 and Server 2019, as well.

Best Answer

Related Solutions

C# – An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode

Config Error: This configuration section cannot be used at this path

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