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!

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

I am on a one year old mac and having issue that many are, with green screens on facebook, you tube etc. Is firefox coming up with an update to fix this?

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by FredMcD

more options

I am on a one year old mac and having issue that many are, with green screens on facebook, you tube etc. Is firefox coming up with an update to fix this?

I am on a one year old mac and having issue that many are, with green screens on facebook, you tube etc. Is firefox coming up with an update to fix this?

All Replies (1)

more options

What's your computer system and Firefox version?

See if this helps;

Type in the address bar about:config (press Enter) (promise to be careful if asked) Type in the search bar and look for the preference : media.wmf.dxva.d3d11.enabled And set its value to false. After, restart Firefox.

If this does not help, change this back.


Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?