Planning › Enable Windows Authentication in Firefox

Enable Windows Authentication in Firefox

NT LAN Manager (NTLM) authentication allows the login credentials of a Windows user, who is logged in to a Windows domain, to be automatically passed to an IIS web server in the same domain. By default, Windows authentication is not enabled in Firefox. To prepare for your implementation, you should enable Windows authentication in Firefox.

To enable Windows authentication in Firefox

1. Start Firefox.
2. Navigate to the following URL:

   about:config

3. Confirm that you want to change the advanced settings.

   The Preference Name list appears.

4. Locate and double-click the network.automatic-ntlm-auth.trusted-uris preference name:

   The Enter string value dialog appears.

5. Specify the list of trusted sites by entering the full URL (for example, http://web.example.com) or the server name (for example, web.example.com)

   Note: Do not enter a trailing slash. If you want to specify multiple servers, separate them with a comma. You can match all the servers in a particular domain, but typical wildcards do not work. For example, you must specify .example.com rather than *.example.com.

6. Click OK.
7. Restart Firefox.