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Why does my keyboard stop working with Firefox?

  • 3 replies
  • 4 have this problem
  • 17 views
  • Last reply by cor-el

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I've read the forums and see that this is a recurring problem on different systems over a long period of time, but there seems to be no official fix to this issue since it's documented over a five year period (that I can find).

I'm running FF 41.0.1 on a MacBook Pro running OS 10.9.5. I have no FF add-ons.

This problem happens repeatedly on my wireless keyboard and my laptop keyboard. Sometimes if affects only keyboard shorts cuts, sometimes it affects EVERY input field in FF. Sometimes I have multiple tabs open, sometimes just one or two.

No apparent rhyme or reason. I can go days without a problem and then have it happen tow or three time is one day.

My fix is to quit and restart FF

Very frustrating when you're in the middle of filling out online forms...

All Replies (3)

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Check the batteries.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options)
key, and then starting Firefox. Is the problem still there?

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FredMcD said

Check the batteries. Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options)
key, and then starting Firefox. Is the problem still there?


Batteries... This is not a battery issue. As I stated this happens with wireless and built in keyboards. And only happens in FF browser windows (if I switch to other apps and there is no issue).

As far as Safe Mode goes, as I stated, if I restart FF the problem goes away. Then returns seemingly at random (as described). Maybe if I ran safe mode exclusively for a week I could tell if there was a difference.

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It is possible that some of the status keys have the wrong state and Firefox sees them as still pressed.

Try to press all the status keys (Shift, Ctrl, Alt, Mac specific key like Command and Option) a few times to see if that helps to recover from this. If it doesn't help then close and restart Firefox or reboot the computer.