Today I updated to Safari 27.0, and now YouTube won't work. The page loads, but when I click on a video either nothing happens, or it tries to play the video but never does. I've restarted and cleared cache, but still no luck. I'm using MacOS 15.8 on MacBook Air 2020 (Intel).
Any tips on how to fix this?
I've submitted feedback to Apple.
I am also running Sequoia 15.8 and YouTube works fine and it has nothing
to do with the latest Safari 27 version.
Try
After updating to MacOS 27, my Mac Mini M2 won't play YouTube or even Netflix properly. I am using 2 displays and the problem occurs to me when the main display is selected as my main audio output. However, when I choose the secondary display as my audio output, refresh the website, then it'll work properly. The reason why this won't work for me is because my secondary display is a tiny 7" monitor that I specifically use to keep my work chat open all the time. So you can just imagine the low audio quality.
And after researching, it looks like this issue has been reported even before the official global release of MacOS 27 so it's surprising to see that Apple ignored the bug reported and allowed the roll out.
Funny how we have to come up with workarounds instead of Apple "engineers" just doing their jobs properly and fix the simple bugs before the official roll out of what they proudly present as their best ever yet OS.
Try to use the internal speaker.
Do not output the sound via the HDMI/thunderbolt
YouTube not working after updating to Safari 27.0
