Firefox won't play Youtube videos. Website opens OK, but when I click on a video, nothing happens; the screen remains dark. Windows 7 Pro x64, Firefox 27.
Youtube was working OK, then just stopped opening and playing videos. Also won't play from the links in my Bookmarks list. I've loaded the latest Adobe flash player and Firefox 27. Tried some of the suggested fixes, but none of them worked.
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Hello nharrold,
Thanks for contacting Mozilla Support. I'm sorry that youtube isn't working for you. Here's some things to try to get youtube back up and running again.
Check your plugins are uptodate!
http://www.mozilla.org/en-US/plugincheck/
Type about:addons in URL and Goto Plugins
Check all the plugins are "Always Active"
Give these things a try and please let us know if this solves your issue.
Cheers, Patrick
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
- Do NOT click the Reset button on the Safe Mode start window.
- https://support.mozilla.org/kb/Safe+Mode
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
You can check for problems with current Flash plugin versions and try these:
- disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
- disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)
- disable hardware acceleration in the Flash plugin
Plugins were all active. Didn't help any.
I finally fixed it by using System Restore.