Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Sites using flash/shockwave cause Firefox to hang.

  • 8 valiny
  • 32 manana an'ity olana ity
  • 1 view
  • Valiny farany nomen'i cdstealer

more options

If the shockwave flash plugin is enabled on version >22, visiting a site that contains flash content will cause Firefox to hang/react extremely slowly. I've tried disabling all add-ons with no effect. I'm using shockwave flash 11.2.r202.310 but it doesn't seem to matter when version of flash I use.

If the shockwave flash plugin is enabled on version >22, visiting a site that contains flash content will cause Firefox to hang/react extremely slowly. I've tried disabling all add-ons with no effect. I'm using shockwave flash 11.2.r202.310 but it doesn't seem to matter when version of flash I use.

Vahaolana nofidina

I FIXED IT

Hi there did you manage to sort out you Adobe Shockwave Flash crashing in fox

I had the same problem no net based Vids would play at all Not Iplayer, you tube nothing the screen/vid box would be grey or black

Its just taken me 19 hours to do it but its mended

On the top of the firefox page hit tools then from the drop down menue sect options.

when the window opens at the top select ADVANCED

on that page you will see a box with (Use Hardware acceleration when available)

YOU NEED TO UN CHECK/TICK THAT BOX

Its as simple as that good luck .........Date I posted this fix (15/01/2014)

Hamaky an'ity valiny ity @ sehatra 👍 3

All Replies (8)

more options

Please ensure that your Firewall/Antivirus program(s) are not interfering with how Firefox connects to the internet.

Ensure that your internet connection is strong and fast.

Does this issue occur on other internet browsers?
Does this issue occur on all pages containing flash content?

more options

Make sure that Flashblock or one of the other extension aren't the cause of this hang.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.
more options

Thanks for the replies guys.

ComputerWhiz: No firewall or AV installed on my laptop.

cor-el: Nothing works. It is the shockwave flash plugin + >=v23 that is the problem. I've tried safemode, I've completely deleted everything eg moving the .mozilla directory and started a virgin firefox with the same results.

more options

OH NO!

You don't have any antivirus or firewall programs installed and active on your computer!

Purchase/download a firewall and antivirus program as soon as possible!

Then run a full scan of your computer's hard drives.

Your Adobe Flash Player could have been damaged by a virus or malware.

Novain'i Wesley Branton t@

more options

There is no need of a AV on Linux at all, or much malware (some rootkits, not very many) to infect it.

Novain'i kobe t@

more options

@Waka_Flocka_Flame

Thank you for that information. I didn't know that. Up until a few months ago, I didn't even know what Linux was.

Sorry about my above answer.

more options

Vahaolana Nofidina

I FIXED IT

Hi there did you manage to sort out you Adobe Shockwave Flash crashing in fox

I had the same problem no net based Vids would play at all Not Iplayer, you tube nothing the screen/vid box would be grey or black

Its just taken me 19 hours to do it but its mended

On the top of the firefox page hit tools then from the drop down menue sect options.

when the window opens at the top select ADVANCED

on that page you will see a box with (Use Hardware acceleration when available)

YOU NEED TO UN CHECK/TICK THAT BOX

Its as simple as that good luck .........Date I posted this fix (15/01/2014)

more options

nice one sighnbox.. worked for me :)