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Why won't Firefox work on OSX Sierra?

  • 2 replies
  • 2 have this problem
  • 8 views
  • 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.

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.

All Replies (2)

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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.