They sorry to hear that. Is your browser generating crash report? If not you can use any older version of FF (Beta) you can download it from here. It will not crash https://www.mozilla.org/en-US/firefox/new/

If you are using a Nightly to have a Windows 64-bit build version of Firefox, why don't you try the 40.0 Beta version which is available as both 32-bit and 64-bit builds. Sure to be a lot more stable than the Alpha 1 Nighty versions. Plus Beta only gets updates once or twice a week, normally.

The 64-bit build Beta is available here: ftp://ftp.mozilla.org/pub/firefox/releases/40.0b4/win64/en-US/

Note: It might be available here - https://www.mozilla.org/en-US/firefox/channel/ - but I can't verify it, as I am using a 32-bit version of Win7.

bobt07 said

Nightly keeps crashing for the last week working or going to a site and all tabs crash After restoring it will restore and I can continue working After restoring it will restore and can crash after a period even when no keys are pressed After restoring it will restore and it will immediately crash again when it does this a number of times I only restore the tab I am using and it may then continue working or crash again if it keeps crashing I close that tab and open a new tab go to the address I was working on it may allow me to keep working or crash again if it it keeps crashing so I can not continue working I then use Internet Explorer to do what I need to do I had this problem last year and it seem to be fixed by one of the daily updates

kushagra Yes it is posting a crash report they are getting lots of them everyday The link that you sent me just congratulated me for having the lastest version of FF

the-edmeister Yes both links are for the download of setup 40.0.4b

the series of events that lead up to this was that both windows 8.1 and shockwave flash 18.0.r0 updated at the same time and after this not all the skins on web pages would display EG logon buttons, action buttons, status bars and more in FF but they would in IE Uninstalled FF and reinstalled problem still there Uninstalled again and deleted profile data reinstalled FF problem fixed It was at this time that FF started crashing though I can not remember if it started at the installation or the next update as they both happened very close together

Did you try to disable e10s?

• about:preferences#general General : Enable E10S (multi-process)

Turning off the "Enable multi-processing" e10s fixed the problem Enabling it FF kept crashing again

I have the same problem.

I'm using GNU/Linux 64 bits and multi-processing turned off.

Mozilla have now fixed the problem and I am now again running with the "Enable multi-processing" switched on It was fixed about 3 days after I turned it off