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I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

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New Contributor

I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

Both adobe flash and firefox are the most recent versions, but I can't run firefox with Flash. I've had to totally uninstall Flash in order to keep running firefox. I'd install an older version, but I have no idea which ones are compatible. My OS is windows 7 64 bit.

37 REPLIES
Site Moderator

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

Recent crashes of certain multimedia contents (this includes Youtube videos, certain flash games and other applications) in conjunction with Firefox are most probably caused by a recent Flash 11.3(and possibly 11.4) update and/or a malfunctioning Real Player browser plugin.

In order to remedy the problem, please perform the steps mentioned in these Knowledge Base articles:

Flash Plugin - Keep it up to date and troubleshoot problems

Adobe Flash plugin has crashed - Prevent it from happening again

Flash 11.3 doesn't load video in Firefox

Other, more technical information about these issues can be found under these Links:

http://forums.adobe.com/thread/1018071?tstart=0

http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html


Please tell us if this helped!

New Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

I have the same problem only on my 32 bit Windows Vista but not on my 64 bit Windows 7. It seems Flash will not start and crash on certain sites but once Flash starts it will work on the problem sites. I wonder if some sites conflict with Flash start up and Firefox. When I go to Adobe Flash site first I then have no problems with flash even on the problem sites. Update: It is now working for some unknown reason. Still have no explanation. It has stopped and started in the past so I hope it continues to work. I had tried all the suggestions with no effect that have been give. Suspect it was a piece of script on the web page that Windows Vista was not handling properly.

New Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

Hello - I have this same problem but can give some more information that may help the awesome ones to find a solution...

I run Windows 7 64bit and Flash 11.3 worked perfectly until Firefox auto-installed the new version of Firefox (15.0) this morning. As soon as I restarted Firefox I started to get this problem.

I thought that maybe there was a compatability issue and that I needed to update Flash, so updated to Flash 11.4 and the problem continued.

This morning I've followed the advice of Tylerdowner. Unfortunately, because Flash doesn't work, the Adobe test page doesn't work... So I tried a complete uninstall and reinstall of Flash 11.4 and the problem remains - the only way to stop the message showing repeatedly is to disable Flash in the add-ons manager...

I do have another (old) PC - running Windows XP - and that is quite happily running Flash 11.4 on Firefox 15.0.

I hope this this information is helpful in finding a solution.

New Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

I have the same problem but am reluctant to revert to an older version of Flash because it is running perfectly with other programmes on my PC. I am aware of others running Firefox 15 on Windows 7 (64bit) machines who are able to use Flash 11.4 without a problem and am at a loss as to why I can't.

New Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

Temporary Solution.

Turn off Automatic Updates in Tools>Options>Advanced>Update and Download and install previous version of Firefox (V14.0.1) from here..

http://www.filehippo.com/download_firefox/download/0d1919444a878f7999e7338f7dd36746/
EditYou may wish to use the official Mozilla Firefox link:
https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/14.0.1/

Everything should then work OK until someone comes up with a permanent solution.

If you have Rapport running see the post by lalunga and install the latest version of Rapport. It has resolved the problem on my machine.


Notes from a forum moderator:

Thanks for the solution egratis. I hope you do not mind if I edit it.

  • It is best to avoid using outdated versions of Firefox if at all possible, because they will not be secure, and will increase the risks to your Computer and your Personal Data.
  • Note official sites offer downloads of current and previous versions of Firefox, as noted in the above linked article
  • I have:
    put a line through the FileHipo link, and added a link to an official ftp download
    converted the mention of lalunga's post to link
Regular Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

My Firefox has been having issues with freezing since June and I'm sick of it I mean on the first of August it froze but then it was fine until my Avast had an update (23rd) that conflicted with my sandbox program (Sandboxie) but that was quickly fixed then on the 28th I updated FF and shortly after it froze up on me when I was viewing a PDF file so I disabled the protection mode in Adobe Flash and installed a fresh copy of FF v 15 so maybe I should downgrade to FF version 14.1 because like I said that's when it started to freeze again.

Regular Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

Did you disable protection mode because that didn't work for me at least with FF v 15. http://www.sandboxie.com/phpbb/viewtopic.php?t=13280

If downgrading to FF v14.1 doesn't help then I'm going to downgrade my flash player that will have to work.

New Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

Same problem with FF15 and the recent auto update of Flash Player. Everything worked fine before Flash update to 11.4 Chrome browser and IE is OK, but I'd rather use FF.

Using Windows7 pro 32 bit.

Seeing as FireFox updated first, then flash, I expect its an issue with the Flash Player.

New Contributor

Re: I've been getting persistent "Adobe Flash 11.4 r402 has stopped working" messages since a FIrefox auto-update earlier today. What to do?

I've been seeing a lot of people having troubles with Flash And Firefox although the solution is pretty simple- just go to [http://www.oldapps.com/flash_player.php oldapps http://www.oldapps.com/flash_player.php and get an older version, you can try few versions until you find the one that works the best, then you can wait a while for a new version from Adobe and try to update to latest again