====== Enable NTLM authentication on non-Windows Firefox  ======

On non-Windows Systems you may Encounter the authentication error „401 UNAUTHORIZED“ while trying to authenticate to SharePoint.

The support for the NT LAN Manager version 1 (NTLMv1) network authentication has been disabled in Firefox on non-Windows Systems since Firefox Version 30.0. NTLM is necesarry to be able to authenticate to SharePoint.

To enable NTLM in Firefox you have to...
  - Open Firefox
  - Access the config file („about:config“ in the URL line) 
  - Change the following keys to true (double click on the key): 
    - network.auth.force-generic-ntlm
    - network.auth.force-generic-ntlm-v1
    - network.automatic-ntlm-auth.allow-non-fqdn
  - Restart your browser

After that you should be able to authenticate to SharePoint.