Firefox running in background

User Help for Mozilla Firefox

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Joined: October 20th, 2003, 2:58 am

Post Posted December 16th, 2017, 11:54 pm

Last night had some updates of windows 10 ever since then firefox only runs in the background, can't use the browser as nothing appears on my screen but the task manager say's it's running in the background. This may not be a firefox issue but it's the only programme affected at the moment. any help or pointing in the right direction would be helpful.


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Post Posted December 17th, 2017, 6:03 am

Have you tried starting Firefox in Mozilla Safe Mode (after making sure that any invisible processes have been ended)?
If no improvement using Safe Mode, do you have the same problem if you create a new profile and test it with no extensions or non-default themes installed?
and ... on_Windows

Also see


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Post Posted December 17th, 2017, 7:47 am

(You'll have to kill any background firefox.exe processes before you'll get much further.)
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20110420 SeaMonkey/2.0.14 Pinball CopyURL+ FetchTextURL FlashGot NoScript


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Post Posted December 17th, 2017, 2:44 pm

therube wrote:(You'll have to kill any background firefox.exe processes before you'll get much further.)

This is the answer. At least to get Firefox to open again. End the task in Task Manager, and Firefox should open right up. I've had it hang here and there too, and I either had to wait it out, or just end the task, to start it again.
Do, or do not. There is no try.

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