Hi mocabean.

Please start with advises in Adobe Flash plugin has crashed - Prevent it from happening again help article.

You can check for problems with current Shockwave Flash plugin versions and hardware acceleration in Firefox and try this:

• make sure you have the latest Flash version:
  http://www.adobe.com/special/products/flashplayer/fp_distribution3.html
• check for updates for your graphics drive drivers
  https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration
• disable protected mode in the Flash plugin (Windows Vista and later)
  https://support.mozilla.org/kb/adobe-flash-protected-mode-firefox
• disable hardware acceleration in the Flash plugin
  https://helpx.adobe.com/flash-player/kb/video-playback-issues.html
• disable hardware acceleration in Firefox
  https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

See also:

• http://kb.mozillazine.org/Flash#Troubleshooting

To the support team that just helped me fix my adobe crash issues....TYVM!!! You all just ended 3 days of grief and strife!! Many kudos to you all :)

how can you disable hardware acceleration in adobe flash when you cant get to the setting menu because the plugin has crashed....???? when you go adobe and test the flash player , no animation starts so you cant get to the contest menu

I did everything suggested above except diable hardware acceleration in adobe flash because I cant get there , do to flash crashing at the adobe site. Flash works perfectly in internet explorer... I did not have this problem with 43.0.4 but upgraded to 44 and this happened

It is unbelievable to me that Firefox has had the same problem for literally years (I noticed it back in 2012) and that the Mozilla team has not come up with a permanent solution. I have been through the list of "try this, try that" many, many times, and none of them work. My browser crashes approximately 10 times per day. It's always the same: Adobe Flash causes it to crash.

I don't understand why this isn't the highest priority for the development team. It makes Firefox absolute torture to use.

I just started suffering from this problem late last week. There have been indications for about the past four weeks that something weird was going on involving Flash, but it was never bad enough to lock the browser up. As of last Friday, I can't run Firefox with Adobe Flash installed. So I got rid of Flash but that presents another set of problems on a lot of websites.