When I try to open any tab on the Firefox toolbar, none will open.
I can open Firefox & the tool bar will load, but when I select any tab under any subject on toolbar, nothing happens. I've tried restarting, doesn't help. Does this mean Firefox is frozen? Safari works fine.
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Hello,
Try Firefox Safe Mode to see if the problem goes away. Firefox Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).
If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:
- Click the menu button
, click Help 
and select Restart with Add-ons Disabled.
If Firefox is not running, you can start Firefox in Safe Mode as follows:
- On Mac: Hold the option key while starting Firefox.
When the Firefox Safe Mode window appears, select "Start in Safe Mode".
If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.
To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.
When you figure out what's causing your issues, please let us know. It might help others with the same problem.
由Mark Schmidt于修改
If it works in Firefox's safe mode try the following directions to find the problematic extension extensions, themes and hardware acceleration issues to solve common Firefox problems Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems