You need Flash Player Version 20.0.0.267
https://www.adobe.com/products/flashplayer/distribution3.html Note: Windows users should download the ‘’’active_x’’’ for “Internet Explorer,” and the ‘’’plugin’’’ for “Plugin-based browsers” (like Firefox).

Note: Windows 8 and Windows 10 have built in flash players and Adobe will cause a conflict. Install the ’’’plugin’’’ only. Not the ’’’active_x’’’.

See if there are updates for your graphics drivers https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

I have the newer 20.0.0.286 installed (plug-in only) and it doesnt work. The flashplayer works on other sites but on the apple.com/trailers the page of the trailer shows a grey tile in the bottom instead of trailervideo and information.

Se attached examples from Firefox and IE.

My Firefox is the second picture.

Are you using any blocking programs / add-ons?

Many site issues can be caused by corrupt cookies or cache.

• Clear the Cache and

• Remove Cookies
  Warning ! ! This will log you out of sites you're logged in to.

Type about:preferences<Enter> in the address bar.

• Cookies; Select Privacy. Under History, select Firefox will Use Custom Settings. Press the button on the right side called Show Cookies. Use the search bar to look for the site. Note; There may be more than one entry. Remove All of them.
• Cache; Select Advanced > Network. Across from Cached Web Content, Press Clear Now.

If there is still a problem, Start Firefox in Safe Mode {web link} While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites. Are there any problems?

Then restart.

Tried everything in your post but still the same problem.

Also tried a quicktime-testpage and that was no problem. The http://trailers.apple.com/trailers still doesnt work however and I dont understand why. Especially as the IE works.

Also tried to install Chrome and the problem there is the same.

https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues

https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues?redirectlocale=en-US&redirectslug=Video+or+audio+does+not+play

Checked most of this and still doesnt work.

I see now that I have the same issue with my laptop and it´s the same issue if I use my home internet connection (LAN) or the mobile internet connection (3G).

Also the Apple Event Keynote works (Quicktime) but not the Trailers page (also Quicktime).

Also, if I use the iphone Firefox-browser it works...

I really dont see what´s the problem :-(

I've called the big guys to help you. Good luck.

Thanks anyways!

What security software do you have?

It is possible that security software (anti-virus, firewall) is causing problems. Try to disable security software temporarily to see if that makes a difference.

There must have been something wrong with the Apple-trailer page or the Mozilla Firefox cause out of nowhere it started working again.

Thanks for your support!