Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
This thread was archived. Please ask a new question if you need help.
Solved المُؤرشفة

Firefox won't play any videos on a fresh install

Firefox Troubleshooting
FredMcD replied
ffox1987
ffox1987

I just formatted and installed Windows 10 (Pro N, 64-bit, 1909 update) and then installed firefox.

To my surprise, no videos can be played on any website (except youtube).

The video either doesn't load or shows the "Error loading player: No playable sources found" error.

I had no extensions installed, tried refreshing, tried disabling hardware acceleration; nothing solved it.

All content plays fine on chrome.

I just formatted and installed Windows 10 (Pro N, 64-bit, 1909 update) and then installed firefox. To my surprise, no videos can be played on any website (except youtube). The video either doesn't load or shows the "Error loading player: No playable sources found" error. I had no extensions installed, tried refreshing, tried disabling hardware acceleration; nothing solved it. All content plays fine on chrome.

All Replies (3)

FredMcD
FredMcD

الحل المُختار

If you have Windows 10 N or KN then you may not have the Media Feature Pack installed. https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows

ffox1987
ffox1987 صاحب السؤال

Thanks Fred, installing the media feature pack solved the problem

FredMcD
FredMcD

Glad to help. Safe Surfing.