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Why won't Firefox work on OSX Sierra?

  • 2 replies
  • 2 have this problem
  • Last reply by Speedy404

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Upgraded my Mac Mini with the latest Sierra OS, version 10.12.6. Downloaded the latest version of Firefox, 54.0.1. All I get is "unable to connect" message. Won't go anywhere. Safari works fine, Internet is fine, what's the deal??? Thanks for any help.

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You might have inadvertently setup some proxy connections in Firefox. Check Advanced/Network/Connection and make sure No Proxy is selected.

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Thanks but that didn't work. All I ever did was upgrade to Sierra, then a lot of things didn't work anymore. Will take to the Apple store.