I know I can add specific URLs in the network.authmatic-ntlm-auth.trusted-uris and separate them by comma delimiters, but I would like to enable NTLM for all intranet sites. I tried http://* and http://. but that didn't work. Also, some of the intranet sites are https.


  1. Set network.automatic-ntlm-auth.allow-non-fqdn to true
  2. Set network.automatic-ntlm-auth.trusted-uris to blank

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2 Answers 2


You don't have to put specific URLs in the list — you can put entire domains. So, for example, adding mycompany.com should enable NTLM for mail.mycompany.com, monitor.mycompany.com, intranet.mycompany.com, &c. (You might need to do .mycompany.com with a leading dot, actually, i can't remember — and my current job doesn't use NTLM, so i can't test.)

You can also tell Firefox to enable NTLM for any site that doesn't have an FQDN (fully qualified domain name); this is useful if your company just uses http://intranet or something similar. To enable this, set network.automatic-ntlm-auth.allow-non-fqdn to true.

  • we don't use FQDN for intranet sites, so i'll try it out when I have a chance. thank you!
    – Ray Cheng
    May 11, 2013 at 1:11
  • 1
    @kine's first suggestion was right, I didn't have to use a leading dot or wildcards to get mycompany.com and all subdomains like dashboard.mycompany.com added. Dec 2, 2013 at 15:54
  • 3
    For anyone confused why entire domains aren't working like I was, using just mycompany.com doesn't work. You have to use http://mycompany.com.
    – Tarka
    Oct 6, 2015 at 17:15

I tried everything, but the thing that worked was setting network.authmatic-ntlm-auth.trusted-uris to domain.com

Thats all you have to do. Trying to do individual websites like http://website.domain.com didnt work. Just use the domain name

  • 1
    Please clarify and add a little more context to this answer to convey what you are suggesting exactly. You know, consider adding some reference to this answer supporting what you state. Otherwise, read over "Why do I need 50 reputation to comment" to ensure you understand how you can start commenting. Aug 18, 2017 at 16:40
  • This seems to be a comment on the already-accepted answer rather than a standalone answer of its own. Aug 18, 2017 at 23:36

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