FireFox 55.0.3 64 bit on Windows 10 - YouTube stopped working - Chrome is OK
Today from the morning my FF (55.0.3 -up-to-date - 64 bit) stopped playing the YouTube videos. It shows the primary YouTube screen with the "Recommended videos" thumbnails. When one is chosen it shows a black screen with the Play and other buttons, but nothing in addition - looks like it doesn't load the rest things (forum, Login icon etc.).
When pressing the Play button nothing happens.
- No updates were performed - No add-ons (FF) were added - Restarted the PC several times - same problem - Updated the FlashPlayer - same problem
Important: no problem detected with Chrome, everything works fine as usual.
Chosen solution
Solved the problem by the option "Refresh Firefox". Interesting, what was the issue?... :)
Read this answer in context 👍 3All Replies (3)
Chosen Solution
Solved the problem by the option "Refresh Firefox". Interesting, what was the issue?... :)
Same problem returned. Nothing is played in the YouTube, but this time it is a bit different.
When choosing a clip the complete page of the video appears, but pressing the "Play" button doesn't achieve anything.
There is the following message instead of the video:
your browser does not recognise any of the video formats
But when clicking on the verification link it says, that my browser supports all the required formats:
What does this browser support?
V HTMLVideoElement V H.264 V WebM VP8
V Media Source Extensions V MSE & H.264 V MSE & WebM VP9
What's going on???
If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block (wanted) content (e.g. Adblock Plus, NoScript, Ghostery, uBlock Origin) always make sure such extensions do not block (wanted) content.
- make sure your extensions and filters are updated to the latest version
Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.
- switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
- do NOT click the "Refresh Firefox" button on the Safe Mode start window