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on osx lion firefox won't authenticate to proxy

  • 7 replies
  • 2 have this problem
  • 8 views
  • Last reply by fsewell

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I'm using Firefox on OSX Lion. I also use Windows 7 on a vmware Virtual Machine. I have the proxy set correctly, safari can use the proxy. I don't get asked to authenticate but firefox tells me it can't establish a connection to the website. It works correctly on Windows 7

I'm using Firefox on OSX Lion. I also use Windows 7 on a vmware Virtual Machine. I have the proxy set correctly, safari can use the proxy. I don't get asked to authenticate but firefox tells me it can't establish a connection to the website. It works correctly on Windows 7

All Replies (7)

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-> Connection Settings

Check and tell if its working.

Modified by Hasan

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Same problem here. We have several people in our office using Macs and those with Lion cannot authenticate to the proxy using Firefox - it doesn't ask for credentials and the proxy returns a "failed to authenticate" error page.

Safari and Chrome work as expected. I also have a Windows 7 VM and FireFox works fine in that.

It seems to be only Firefox on Lion. I upgrade to Lion around Firefox 5 and am now up to FF 9.0.1. Problem still persists.

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Solved it!

Browse to about:config. Filter on network.neg, and double-click network.negotiate-auth.allow-proxies to set it to false.

Firefox will then correctly prompt for proxy authentication.

Modified by esopher

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Yes, it prompts but never actually authenticates. It will keep coming back to the authentication screen, irrespective of if you use the correct authentication details or not

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Yes, it prompts for authentication but it never actually authenticates. It keeps cprompting for authentication, even if you are using the right username/password.

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-> Firefox can't load websites but other browsers can

Check and tell if its working.

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Nope, went through all the steps, same issue