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Shockwave flash causes Firefox to crash

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New User

Shockwave flash causes Firefox to crash

My Firefox crashes when trying to open 75% of web pages. I get the windows standard "Firefox is not responding" window after it freezes while trying to load the page.

I have singled out the problem to be the Shockwave Flash (11.5.502.149) plugin as everything works correctly with this disabled.

I have tried updated flash, uninstalling and re-installing it and the same with FF but nothing seems to work so far.

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31 REPLIES
Site Moderator

Re: Shockwave flash causes Firefox to crash

hello, first if you have real player installed, please make sure that it is up-to-date since older versions of it are known to cause falsh crashes.

otherwise it may be an issue with the protected mode in the flash plugin - you could try if downgrading to flash 10.3 (which is still supported) or disabling protected mode makes a difference.

Site Moderator

Re: Shockwave flash causes Firefox to crash

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

New User

Re: Shockwave flash causes Firefox to crash

I have tried resetting Firefox and it works great... for about 30 mins until it starts crashing again.

As for Real player, I don't have that installed so that can't be the issue.

I also tried turning off protected mode but this didn't do anything either.

Site Moderator

Re: Shockwave flash causes Firefox to crash

when you type about:crashes into the location bar, are there any recent crash reports listed? if so please copy the latest few crash IDs and paste them here into a reply on the forum. thanks...

New User

Re: Shockwave flash causes Firefox to crash

The newest ones are from Jan but they would be related to this issue as I have had this problem for a quite some time now.

f63337c5-1057-4fff-8801-e347eff0ff5f-flash1 f63337c5-1057-4fff-8801-e347eff0ff5f-flash2

When the crash happens, this is what the windows crash report says:

 Problem Event Name:	AppHangB1
 Application Name:	firefox.exe
 Application Version:	18.0.2.4780
 Application Timestamp:	510c057b
 Hang Signature:	97b6
 Hang Type:	0
 OS Version:	6.1.7601.2.1.0.256.1
 Locale ID:	2057
 Additional Hang Signature 1:	97b6ddfc7429d9c31a938e615b6d07db
 Additional Hang Signature 2:	693d
 Additional Hang Signature 3:	693d8c163b400a54f171a783809c825c
 Additional Hang Signature 4:	97b6
 Additional Hang Signature 5:	97b6ddfc7429d9c31a938e615b6d07db
 Additional Hang Signature 6:	693d
 Additional Hang Signature 7:	693d8c163b400a54f171a783809c825c
New User

Re: Shockwave flash causes Firefox to crash

Anyone else have any other ideas I can try? Nothing is working so far :(

Site Moderator

Re: Shockwave flash causes Firefox to crash

You can check for problems caused by recent Flash updates and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in Flash 11.3 and later
  • disable hardware acceleration in the Flash plugin
  • downgrade the Flash player to version 10.3 or 11.2
New User

Re: Shockwave flash causes Firefox to crash

cor-el, if you looked at previous comments you would see that I have tried all that already.

New User

Re: Shockwave flash causes Firefox to crash

I am having the same problems, it makes my FF unusable with the constant flash crashes. I don't have real player.. I have win 7 and I tried updating FF and the flash both with no success or help to this problem.

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