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

YouTube won't enter full screen mode in Firefox

  • 1 reply
  • 1 has this problem
  • 20 views
  • Last reply by guigs

more options

A day or two ago, I was watching a YouTube video in Firefox. I hit the full screen button on the YT player and the player entered full screen mode. My browser asked me if I would like to allow YT to enter full screen mode, I clicked allow. Ever since, whenever I click the full screen button on any YT player/video, nothing happens.

I do not have this issue in Chrome, I've tried clearing my online and offline cache, and I don't seem to have this issue with other video players in Firefox.

Any help would be great. Thanks.

A day or two ago, I was watching a YouTube video in Firefox. I hit the full screen button on the YT player and the player entered full screen mode. My browser asked me if I would like to allow YT to enter full screen mode, I clicked allow. Ever since, whenever I click the full screen button on any YT player/video, nothing happens. I do not have this issue in Chrome, I've tried clearing my online and offline cache, and I don't seem to have this issue with other video players in Firefox. Any help would be great. Thanks.

All Replies (1)

more options

Does this still happen in version 36 after today's update?