Currently Being ModeratedFeb 21, 2014 6:26 AM (in response to Vralstad)
I would re-install safari, whcih means re-installing OSX (over the top of your copy som 99% of stuff is not impacted).
There must be some library or plug-in missing or corrupted.
Does youtube always use flash? I dont think so, or it would nto work on ipads and iphones. It may be a different plug-in - html5 maybe?
Currently Being ModeratedFeb 21, 2014 6:40 AM (in response to Vralstad)
You can't ( AFAIK) re-install Safari. You must re-install all of Mavericks. The one time i did it i lost nearly nothing, a very, very few easily fixed settings. But you might want to double check - we're not Apple support, we're just folks like you whomay have BTDT/
Currently Being ModeratedFeb 21, 2014 6:46 AM (in response to Vralstad)
System Preferences > Other > Flash Player > Playback
Click the "Peer-assisted Networking Setting by Site" button at the bottom.
Is YouTube.com listed and not allowed?
Networks Access column
Currently Being ModeratedFeb 21, 2014 7:13 AM (in response to dominic23)
I didn't look for that long, but I could not fin any sites that were red/blocked.
If I re-install Mavericks, do I lose stuff like videos, pictures, music, apps or anything like that?
Currently Being ModeratedFeb 21, 2014 9:16 AM (in response to Vralstad)
1. System Preferences > Flash Player > Advanced > Delete All
Press the "Delete All" button
Install Adobe Flash Player.
Follow the prompts.
Restart computer. Relaunch Safari.
2. Allow Plug-ins
Safari > Preferences > Security
Internet Plug-ins > "Allow plug-ins"
Press " Manage Website Settings" button for more options.