No Sound in Firefox on Windows 7 from YouTube, CNN, CSPAN unless Protected Mode is disabled.
I have no sound when playing Flash videos on any Windows 7 PCs from the following standard websites - YouTube, CNN, CSPAN and ESPN. Some YouTube videos provide both video and audio if I enable HTML5. Most do not. CSPAN Videos provide video but no audio. CNN Videos provide video but no audio. I have no problems on any Windows XP PCs.
I have had no sound in Firefox since Firefox 12 with Flash Player 11.3 and higher. I upgraded today to 11.4.402.287 Flash to see if that would fix things. It did not.
I only get sound if I disable Flash Protected Mode which is unacceptable in my corporate environment. I can not downgrade to Flash 11.2 because it too does not provide protected mode. My audio drivers are up to date. I tried changing the audio playback to 16-bit 44100. I have disabled Silverlight. I have disabled all plugins except Flash. All test sites show the Flash version as installed and correct.
Nothing I try among all the recommended solutions I have found on Forums.Adobe or elsewhere on the Internet resolves the problem.
As of today, I am running:
- Windows 7
- Firefox 16
- Flash 11.4.402.287
I will provide whatever debugging information I need to to resolve this issue as quickly as possible. My Windows XP customers are being upgraded to Windows 7 over the next few months and I need to resolve this issue asap. Any help from Adobe staff will be greatly appreciated.
Please let me know what I can do to resolve this problem without disabling protected mode or back-revving to Flash 11.2.
Thank you.
