Friday, November 6, 2009

Firefox repeatedly asks for proxy authentication

I use firefox mostly at home (mainly for firebug, greasemonkey, YSlow). Sometimes Chrome (for speed mainly). At work mainly IE and Firefox. However, after I updated to FF3 I started seeing the proxy authentication prompt being shown repeatedly, even after I typed in the correct info the first time. This is what is needed.

1. Type about:config in address bar.
2. In Filter type network.negotiate (after clicking "I'll be careful, I promise!" - love the FF warnings). Now you should see a handful of settings.
3. Double-click on network.negotiate-auth.allow-proxies and set it to false. It seems counterintuitive, but you set it to false to make it work with the ISA proxy.

After this change, I was back to using FF3 at work.

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