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I know I can add specific URLs in the network.authmatic-ntlm-auth.trusted-uris and separate them by comma, 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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up vote 18 down vote accepted

You don't have to put specific URLs in the list — you can put entire domains. So, for example, adding should enable NTLM for,,, &c. (You might need to do 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.

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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 '13 at 1:11
That worked like a charm! thank you! – Ray Cheng May 13 '13 at 15:48
@kine's first suggestion was right, I didn't have to use a leading dot or wildcards to get and all subdomains like added. – David McClelland Dec 2 '13 at 15:54
For anyone confused why entire domains aren't working like I was, using just doesn't work. You have to use – Tarka Oct 6 '15 at 17:15

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