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Firefox crashes constantly

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  • Last reply by cor-el

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Hello. I have latest version of Firefox on WIndows 7. Since prior version, Firefox started to crash out of nowhere almost every minute. I've noticed that it crashes mostly when I change/close tabs and when I use anything Flash Player related (such as Youtube).

I tried a clean install and disabling hardware acceleration. None worked for more than a few minutes.

Hello. I have latest version of Firefox on WIndows 7. Since prior version, Firefox started to crash out of nowhere almost every minute. I've noticed that it crashes mostly when I change/close tabs and when I use anything Flash Player related (such as Youtube). I tried a clean install and disabling hardware acceleration. None worked for more than a few minutes.

All Replies (2)

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If you submitted crash reports through the Mozilla crash reporter, you can share them with forum volunteers. To gain access, we need you to post some of the crash IDs. Please check the support article "Firefox Crashes" (especially the last section) for steps to get those crash IDs, and then post some of the recent ones here.


This is some standard guidance that addresses the most common issues with the Flash Player plugin. I'm sure you've seen some of it before, but just in case:

(1) If you have any recorders/downloaders that interact with Flash media make sure they are as up-to-date as possible, or disable them temporarily.

(2) Disable hardware graphics acceleration in Firefox and in Flash

(A) [YOU ALREADY DID THIS] In Firefox, un-check the box here and restart:

"3-bar" menu button (or Tools menu) > Options > Advanced > General > "Use hardware acceleration when available"

(B) In Flash, see this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues

(3) Disable protected mode feature

This involves creating or editing a settings file. The following pages/posts provide different ways to do that:

Flash needs to completely unload from memory (exiting and starting Firefox up again might help) before this takes effect.

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Note that your System Details list shows an old Shockwave Flash 11.8 r800 version.

You can find the latest Flash player versions for Firefox on this page: