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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Flash Plugin prevents every sites in loading and slows down the script

  • 2 replies
  • 10 have this problem
  • 15 views
  • Last reply by tyler92

tyler92
tyler92
more options

Lately I've figured out that whenever I enable Shockwave Flash Plugin, I cannot load any website because Firefox stops responding, and there are a lot of message shows that:

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

If I disable Shockwave Plugin, Firefox can run smoothly, except loading any flash video from youtube.

Lately I've figured out that whenever I enable Shockwave Flash Plugin, I cannot load any website because Firefox stops responding, and there are a lot of message shows that: A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. If I disable Shockwave Plugin, Firefox can run smoothly, except loading any flash video from youtube.

All Replies (2)

user633449
user633449
more options

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!

tyler92
tyler92 Question owner
more options

I did as you told but the problem isn't gone. Firefox will stop if shockwave flash is enabled. Now I have to disabled that plugin and use Firefox under limitation.