Firefox asks for user name and password on internal sites

Follow the instructions below and Firefox will not splash its password prompt for internal sites.

  • Firefox version < 13
    • Open Firefox
    • In the Address bar type about:config
    • In the filter field type ntlm
    • Double click network.automatic-ntlm-auth.trusted-uris
    • In the prompt that comes up, type a list of server you want to allow, separated by a comma and a space. For example, if you wanted to allow http://company1_server and http://company2_server, you would type in company1_server, company2_server
    • Click OK
    • In the filter field type negotiate-auth
    • Double click network.negotiate-auth.trusted-uris
    • Set the same value as above
    • Click OK
    • Restart Firefox.



  • Firefox version >= 13
    • Open Firefox
    • In the Address bar type about:config
    • In the search/filter field type ntlm
    • Set network.automatic-ntlm-auth.trusted-uris to .company_name.com
    • Set network.automatic-ntlm-auth.allow-non-fqdn to true by right-clicking and selecting "toggle"
    • In the search/filter field type negotiate
    • Set network.negotiate-auth.trusted-uris to .company_name.com
    • Set network.negotiate-auth.allow-non-fqdn to true by right-clicking and selecting "toggle"
    • Click OK if present
    • Restart Firefox.

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