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Editorial Team
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Asked: 2026-05-21T19:43:56+00:00

Ok, I’m working on an asp.net web application to be used internally to track

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Ok, I’m working on an asp.net web application to be used internally to track where our staff goes out on campus and what they’re doing.

We currently use a system for this that uses “NoSQL” tables (which not 100% familiar anyway..) but it’s old system using cgi scripts. So I’m rewriting it in asp.net to kind-of update the system to be more modern with a modern design and adding in active directory authentication for it since it uses it’s own user database separate from AD which we use everywhere else.

I’ve found an article to enable Active Directory Authentication via web.config, however, I’d rather instead of using forms authentication, I’d like to tie this into an HTTP-Prompt for authentication. I’ve tried some Google searches to try to find a solution, but I can’t seem to find anyone out there that has done this before.

Thanks in advance.

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  1. Editorial Team

    First off, if you are going to authenticate people with their domain credentials, you should make sure to use HTTPS since otherwise their passwords will be easily obtainable using a network sniffer.

    OK so what you are talking about is Windows authentication mode in ASP.NET with IIS Basic Authentication. You need to configure the following things in your web.config:

    <configuration>
  <connectionStrings>
    <add name="ADConnectionString" connectionString="LDAP://your.ad.fqdn.com/DC=com,DC=fqdn,DC=ad,DC=your"/>
  </connectionStrings>
  <system.web>
    <membership defaultProvider="ADMembershipProvider">
      <providers>
        <add name="ADMembershipProvider" type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="ADConnectionString" connectionUsername="MYNTDOMAIN\someuser" connectionPassword="asdf1234"/>
      </providers>
    </membership>
    <authentication mode="Windows"/>
  </system.web>
</configuration>

    Next you are going to want to configure IIS for Basic Authentication. Assuming you are running IIS 7.x, In IIS Manager find the root folder of your application, then click Authentication. You should be able to enable Basic Authentication here. You can also enable Windows Authentication to allow IE/Chrome users to log in automatically:

    Basic Authentication in IIS 7

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