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Why can't I find a help button on my "frozen" Firefox screen so I can attempt to reset it? I've tried everything.

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I have a Mac and after contacting Xfinity/Comcast I ws told to first of all Restore or Reset Firefox. I can't do this because my screen is frozen. I can access my emails on Safari, but I can't find any solution to fixing Firefox.

I have a Mac and after contacting Xfinity/Comcast I ws told to first of all Restore or Reset Firefox. I can't do this because my screen is frozen. I can access my emails on Safari, but I can't find any solution to fixing Firefox.

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If Firefox is still frozen, you might need to "force quit" Firefox. There was an earlier thread about how to do that: I cannot Quit Firefox on my Mac. This means I can't shut down my computer and I cannot install updates.

Of course, Firefox might still have a problem the next time you start it up if it is freezing based on something on the site you're viewing. But it's worth a try.

Before trying a Reset, you could test in Firefox's Safe Mode. That's a standard diagnostic tool to deactivate extensions and some advanced features of Firefox. This article has more information about how to use it: Diagnose Firefox issues using Troubleshoot Mode.

Any improvement?

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This didn't help. My first error message was there was an unresponsive script. Anything I clicked on did nothing and I can't even access Troubleshooting Firefox. I appreciate your suggestions, but they didn't wok.

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Were you able to force quit Firefox and start it up in Safe Mode? Where did that go wrong?

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Can you start Firefox in Safe Mode by holding down the Options key?

Try to download the full version and trash the currently installed version to do a clean install.

Download a new copy of the Firefox application and save the disk image file to the desktop

Your personal data is stored elsewhere in the Firefox profile folder, so you won't lose your bookmarks and other personal data when you uninstall and (re)install Firefox.

You can also try to boot the computer in Safe mode. Starting up in Safe Mode: http://support.apple.com/kb/HT1455