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) In Firefox, un-check the box here and restart:

orange Firefox 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 (Windows Vista and higher)

See this support article from Adobe under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

Any improvement?

Note that this is possibly a problem with Firefox 24 and the latest Adobe Flash player (11.9) on Windows.

See also:

• [/questions/974074]

This error appears on Firefox 24 due to FlashPlayer 11.9. The newest version of Flash may not be compatible with Firefox 24. So, we'll just have to wait for Adobe with come up with an update. You can read this post which shows how to fix this error step-by-step with screenshots - How to fix Flash Plugin error 0xc0000710 in Firefox 24

1. Uninstall Flash Plugin 11 from Add/Remove programs
2. Download Flash Plugin 11.8 (156.2 MB) file from http://helpx.adobe.com/flash-player/kb/archived-flash-player-versions.html Scroll down the page to find the list.
3. After the file downloads, run the win.exe file
4. Open Firefox again and the popup should be gone.

I have tried the method of uninstalling the new version of the plugin and installing the old version.

After I uninstall I have no plug-in, good It was uninstalled.

However when I install the old version, I end up with BOTH the new and old plugin in the firefox add-ons. The new version is there and still causing the crash pop-ups.

Why do I get both versions? Also I cannot de-activate one of the two. Either both versions must be activated or de-activated.

Hi SlargTarg, if you have any Firefox tabs open that are using Flash, then the old plugin can't be removed. You may need to remove the unwanted file manually, possibly while Firefox is closed.

The location of the NPSWF32...DLL files depends on your OS. For Windows:

32-bit Windows: C:\Windows\System32\Macromed\Flash

64-bit Windows: C:\Windows\SysWOW64\Macromed\Flash

Hi SlargTarg, try running the Flash uninstaller from Adobe Flash Player Uninstall page It should remove all traces of Flash.

If not, open Run window (Win key + R) type appwiz.cpl From the list of programs, select Adobe Flash Player 11 Plugin and uninstall it. See if that removes it.

Just make sure, you select Notify me of updates in the last installation step or you may automatically change back to Adobe 11.9.

I am with right the same problem , after installed shockwave player start have complications with flash player too , i uninstalled shockwave, uninstaled mozilla firefox 2 , removed all my settings everything , restarted 4 times after unins. etc etc , noghting worked i read something about that irritating script ; http://S.ytimg.com/yts/jsbin/www-pageframe-vflMe4hXu.js:37 following will give 404 error , but for parts if i put just http://S.ytimg.com on my browser, this is from youtube ( google ) and sometimes this litlle program catch permittions to violate your camera and your geo location i changed from google to Mozilla firefox for protect my privacy , but sims its the same , this script schoulded be desarm , youtube dont need that for noghting else but spy and collect data from us

ps: my problem goes on and on , Mozilla just dont run anymore frezzes i may move broser for Tor

Thanks anyway

Hi manelmanel, your issue of problems with scripts running slowly (then getting the Continue/Stop dialog) is different than the original question of crashes.

I'm not sure what version of Firefox you really have, Firefox 2 is ancient now.

Since there is partial transparency in your screen shot, I am going to guess that you run Windows Vista or Windows 7 (or newer). If you have not already, please disable the Flash Player's protected mode feature to see whether this resolves the problem with the Continue/Stop dialog. That worked for me: Flash hangs Firefox (eventually get script continue/stop dialog).

The following pages provide information on how to disable the protected mode feature.

• Adobe support article under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

• Manual steps: https://support.mozilla.org/questions/968190?page=5#answer-509209

• Batch file: https://support.mozilla.org/questions/982093#answer-518078

I have been having continuous and persistent "Application Error" popups from the Adobe Flash Player plugin (see first attached image). This has been happening in Adobe Flash Player plugin versions 11.9 and 12. I was hoping that version 12 would resolve the issue, however it has not. This has been seriously frustrating, annoying and particularly disruptive to both personal and business web browser usage. I am truly supportive of Firefox, it is an excellent platform.

I have just now downgraded to Adobe Flash Player plugin version 11.8 (11.8.800.94) and the "Application Error" seems to have disappeared. However, I am now AGAIN getting the continuous "crash" within the Flash frame.

My observations are: 1. This is a widespread problem (for Firefox) 2. This problem only affects Firefox (not other browsers). 3. Flash worked in Firefox in the past.

My guess is that this is some problem with the Adobe Flash Player, so I am going to try successively downgrading until it works correctly. I have downloaded all previous Flash Player versions to enable downgrading.

Hi johfc, if you have Windows Vista, 7, 8 or 8.1 and have not already tried disabling the Flash Player's protected mode feature, please give that a try.

This involves creating or editing a configuration file in the same folder as the Flash DLL file. See these for more info:

• Adobe support article under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

• Manual steps: https://support.mozilla.org/en-US/questions/968190?page=5#answer-509209

• Batch file automating the process: https://support.mozilla.org/en-US/questions/982093#answer-518078

This might not take effect until after you exit and restart Firefox.

And the problems continue in the 13 version of the plugin, avalable as from yesteday. It also rendered inoperative both Skype and Dragon Naturally speaking. All happening within minutes of the download, after clearing the decks of the abortion of version 12, which was giving the identical problems, but not so slowly.

In my earlier reading this evening, I read that part of the problem may well be Reader XI, and certainly it wasn't working yesterday for a PDF file on the web. and does not feature in my Control Panel to uninstall.

And guess what, Adobe are offline, for a revamp of their website. Better they spent the time curing the problems they caused.

If anything the delay to the error message that the plugin has failed is even longer, and for the same window feels obliged to repeat itself, even when Flash not required for the page. Clearly employing kindergarten tots now to write their progs, and making a right hash of it .

Time for a class action?