Fix non-stop repeated proxy authentication dialog box in FireFox.

If repeated proxy authentication in Firefox bugging you so much, here is the trick to fix it. I tried and it is working fine.

  1. In FF Location bar, type about:config, and press Enter.
    “This might void your warranty!” warning page may appear. Click I’ll be careful, I promise!, to continue to the about:config page.
  2. In the about:config page, search for the preference “network.negotiate-auth.allow-proxies”.
  3. Double-click on it and will see the value will change to false.
  4. Restart FF and get rid of Proxy Authentication pop up.


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