YouTube videos not loading for some Firefox users

Firefox is one of the oldest and most popular open source web browsers developed by the Mozilla Foundation.

However, over the past few days, Firefox users have reported an issue where some recently downloaded YouTube videos are not playing or loading (1,2,3,4).

The problem only seems to trouble Firefox users. Even other browsers like Edge and Chrome seem to work fine, suggesting that this isn’t an issue for Chromium-based browsers.

We’ve added some reports below about the issue for reference:

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I have a weird problem where firefox doesn’t load some youtube videos, but if I cut/paste to chrome it loads immediately.
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According to some users, whenever they click on a YouTube video, it gets stuck on the loading circle and never changes.

anyone else having a firefox issue where some youtube videos load just fine and then others are blocked FOREVER unless you play them in another browser 🙃
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@firefox Tahnks for another crap update where youtube videos take forever to load
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Unfortunately, the Firefox support team has not yet acknowledged the problem. But we have found some workarounds that can fix the issue where Firefox is not loading YouTube videos.

workaround for firefox problem
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Another Redditor also suggests disabling BTTV and restarting the browser to temporarily fix the problem.

As I mentioned, they will start working after some time. Try disabling BTTV and restarting the browser – seems to have worked for me a few times.
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That said, we’ll report back with more details as we have new information to share.

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Shirley K. Rosa