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Does Firefox 56.0.2 work in OS 10.13.1

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I recently upgraded one of my Macs to High Sierra, OS 10.13.1. Firefox 56.0.2, upgraded on 10-17-2017, does not open All I get is a bouncing icon. I am sending this via Firefox 56.0.2, using my other Mac, running Maverick. I've changed the default to Firefox with no effect. It won't open. Any solutions out there?

I recently upgraded one of my Macs to High Sierra, OS 10.13.1. Firefox 56.0.2, upgraded on 10-17-2017, does not open All I get is a bouncing icon. I am sending this via Firefox 56.0.2, using my other Mac, running Maverick. I've changed the default to Firefox with no effect. It won't open. Any solutions out there?

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Backup your profile just in case. https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data Then Uninstall Firefox and delete Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86). Run a mac Cleanup tool. Reinstall Firefox 56.0.2 is current release https://www.mozilla.org/firefox/all/ Full Version Installer

Note : Firefox 57 Quantum release date Nov 14th https://www.mozilla.org/en-US/firefox/quantum/ Note : Legacy Extensions will be disabled and or removed.

Please let us know if this solved your issue or if need further assistance.

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Note that the OP has this issue on the Mac OS X High Sierra platform.

Try to start Firefox in Safe Mode to see if that works.

  • Windows: hold down the Shift key while starting Firefox
  • Mac: hold down the Options key while starting Firefox

Note that there are still a lot of bug with this latest OS X version.

  • Bug 1379811 - [10.13] macOS "High Sierra" tracking bug

(please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html
)