Youtube videos not playing in full screen mode

Same exact problem with me. Been searching for a solution but not finding anything. Very frustrating.

iMac OS X El Capitan 10.11.2 Safari Version 9.0.2

I have updated Flash. Cleared all cookies but nothing helps.

Try pausing the video and then start playing it again.

You are welcome. I haven't seen a post that provides a permanent solution. Everything is a workaround.

Same problem here since i have upgraded to MacOS 10.11.2.

I am using the youtube HTML5 player and I have no Flash installed.

I'm having the same problem too. It's weird, but pausing and restarting video does fix it. Strange bug. Hopefully Apple fixes it soon

I have the solution for this error with Safari and Youtube. It's very easy, after all. Follow these steps:

1. Download ADWARE MEDIC (http://www.adwaremedic.com/). It's the ONLY APPLICATION authorized by Apple.

2. Install, open and click on "Scan".

3. Remove all malware.

4. Close the application.

5. Open "Finder", hold down the Alt button and click on "Go to" > "Library".

6. Look for the "Preferences " folder and duplicate it in the same place.

7. Now, you must have "Preferences" and "Preferences copy". If you have, delete "Preferences".

8. Restart your computer.

9. Check Youtube.

😉

Please stop spamming this advertisement to all the threads about this issue. The "malware" in question is the latest update to El Capitan, which has created this issue for everybody.

I have the same issue since MacOS 10.11.1. Updated to MacOS 10.11.3 Beta but problem still exist.

No problem in Google Chrome. Please fix this annoying problem asap!

I

I don't use f.lux 🙂

yes i have the same issue. youtube full screen mode isn't working properly.

Lol nice, worked for me.

Thank you so much. This bug was very annoying.