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Apr 12, 2001
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The latest update to OS X Yosemite, 10.10.1, appears to be causing some users to be unable to play YouTube videos in Safari. According to threads on the Apple Support forums and Google's Product forums, some users that attempt to play YouTube videos are seeing only black screens with audio clipping or are experiencing problems loading videos.

Other users are able to play videos, but are seeing a brief error message before a video begins to play, and still other users are getting complete browser crashes when attempting to watch a video. For some users, the problems just started a few hours ago, suggesting the issue may be on YouTube's end.

youtubeerrorsafari10101.jpg
I installed Yosemite on my iMac (20-inch, Mid 2007) when it was first released and I had no issues whatsoever.

Last night I updated Yosemite to 10.10.1 and now all of a sudden Safari Version 8.0 (10600.1.25.1) won't play any YouTube videos. All I get is a black screen with a little audio clipping.

When using Firefox (v32.1.1) or Chrome (v38.0.2125.122) everything works ok.
MacRumors has confirmed the problem and has also had some trouble loading certain YouTube videos in Safari. Users on the support forums have tried various methods to fix the issue, including resetting PRAM, clearing cookies and caches, but nothing appears to work to fix the problem. One user discovered a temporary fix, going to Develop --> User Agent --> and checking Google Chrome - Mac, but the fix resets when the browser is closed.

YouTube videos appear to be playing fine in both Chrome and Firefox, so a workaround until a fix is available is to watch videos in an alternate browser.

Released to the public on Monday after two weeks of testing, OS X 10.10.1 bundled in reliability improvements to Wi-Fi, Microsoft Exchange, Mail, and Back to My Mac. Apple has already seeded a second Yosemite update, 10.10.2, to developers, but that beta has its own issues, including problems with Chrome, and user reports suggest the Safari error is present on 10.10.2 as well.

Update: Users on OS X 10.10.0 are also reporting the issue, suggesting it is indeed a YouTube problem.

Update 2: YouTube videos are once again working properly for Yosemite users.

Article Link: OS X Yosemite Users Experiencing Issues With YouTube Videos in Safari [Updated]
 
Yup. I get the text, then it plays but half the time, it doesn't play at all. It may to do with the flash plugin.
 
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Me too. Yosemite still has some interesting "features" that I have to find work arounds for.
 
10.10.2 has the same problem for me.

Thanks for the temporary fix though
 
Huh.

Mine shows that message for just a moment, then continues fine.

The real trouble I have is random black boxes in the rendered Safari pages... at random.

This has not been a great update for Safari.
 
Ive noticed this.
I've got flash installed. Im going to uninstall that and give it another go.
 
I have literally spent the last hour troubleshooting this, and JUST refreshed Macrumors to post in the forums, and bam! Here's the EXACT issue I'm experiencing.

Basically, HTML 5 playback is utterly broken in Safari right now on my 5K iMac running 10.10.1. I get a little SQUEAL sound when I try and play a video, and then nothing. Safari freezes, and I have to quit it.

Ugh... what is going on at Apple these days?
 
It's funny this was reported today because the issue started happening today. Youtube has been working fine on 10.10.1 Safari since release.
 
Phew. I was wondering if it was just me. Started happening just a few hours ago and was incredibly frustrated.

Yes, I wonder what happened in the last few hours? Feels like Google did it on purpose because of Chrome not working in 10.10.2 beta?
 
I started noticing this today. I get a short screech noise and then no video plays. Interesting part, I still running 10.10.0

PC
 
Me too :(

I thought that something wrong happened to my Mac, Thanks MacRumors. I noticed this issue 4 hours ago. Some videos play and others won't, but they work fine on Google Chrome.
 
Dear Apple,
I know you don't read these groups (maybe so) but could you please stop putting stuff out that just breaks other stuff? I mean can't you just check it out better first? Hhhhhhhh your reputation is at stake here and I am embarrassed for you. :eek: I LOVE you Apple but C'mon ppl!
 
I had that happen for the first time today when I tried playing the new Cortana video on the Macrumors home page.

I've been using Chrome for when things just don't work right in Safari, and in Chrome they do just seem to work right. Been using it more and more.

EDIT: Somewhat related, I practically took on a part-time job after Yosemite came out with a bug I discovered in screensharing. As a non developer I still took it upon myself to submit it to bugreport.apple.com. I have in total uploaded 15 attachments and tens of updates. I've taken videos showing the bugs to them. I have had to harass them and call developer support who told me to create a new bug report to tell them to respond to the other bug report that they hadn't responded to. Finally today they told me they could reproduce the bug, and I felt a little bit of relief that I'm not crazy. I didn't even get a thank you. AppleCare had me do a clean install of Yosemite twice. I spent tens of hours on helping Apple to fix something that they broke in Yosemite.
 
Dear Apple,
I know you don't read these groups (maybe so) but could you please stop putting stuff out that just breaks other stuff? I mean can't you just check it out better first? Hhhhhhhh your reputation is at stake here and I am embarrassed for you. :eek: I LOVE you Apple but C'mon ppl!

It really is sad. I can't think of any other time in Apple history they've had so many issues all at one time. iPhones bending, iPads vibrating, iOS 8.0.1 literally ruining devices, poor wifi issues in Yosemite, a buggy, buggy iOS 8, - the list is endless. It's just sad.
 
I never ever had this problem until I read this thread. Then I want to play the new microsoft add and BAM! Thanks Macrumors.

Also, there is a new version of flash out. Is apple disabling the old one? Try upgrading flash.
 
I had that happen for the first time today when I tried playing the new Cortana video on the Macrumors home page.

I've been using Chrome for when things just don't work right in Safari, and in Chrome they do just seem to work right. Been using it more and more.

That's exactly when I noticed it not working. The Cortana video. Then I got mental and updated Safari to 8.0.1. beta and it still didn't work, and then I refreshed Macrumors to post about it, and voila.
 
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