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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

My Mac keeps crashing (whole system) when I'm watching videos with Firefox, any idea why?

ThomasVasconcelos
ThomasVasconcelos
more options

Ok so I got a new mac and as usual install firefox which is my favorite browser, suddenly my computer started crashing, not just firefox the whole system froze and I had to reboot to make it work again, I didn't know what was happening until I noticed that said crashes happen when I was watching videos on firefox, I tried to use chrome and the issue was gone. So anyone has any idea why this is happening? I really would love to start using firefox again!

Ok so I got a new mac and as usual install firefox which is my favorite browser, suddenly my computer started crashing, not just firefox the whole system froze and I had to reboot to make it work again, I didn't know what was happening until I noticed that said crashes happen when I was watching videos on firefox, I tried to use chrome and the issue was gone. So anyone has any idea why this is happening? I really would love to start using firefox again!

All Replies (1)

Wesley Branton
Wesley Branton
more options

Some problems with Flash video playback can be resolved by disabling hardware acceleration in your Flash Player settings. (See this article for more information on using the Flash plugin in Firefox).

To disable hardware acceleration in Flash Player:

  1. Go to this Adobe Flash Player Help page.
  2. Right-click on the Flash Player logo on that page.
  3. Click on Settings in the context menu. The Adobe Flash Player Settings screen will open.
  4. Click on the icon at the bottom-left of the Adobe Flash Player Settings window to open the Display panel.

    The image "fpSettings1.PNG" does not exist.
  5. Remove the check mark from Enable hardware acceleration.
  6. Click Close to close the Adobe Flash Player Settings Window.
  7. Restart Firefox.

This Flash Player Help - Display Settings page has more information on Flash Player hardware acceleration, if you're interested.

Does this solve the problem? Let us know.

If this does not fix the issue, you may need to reinstall Adobe Flash Player on your computer.