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There's one specific youtube video that I uploaded using Firefox that will not play on any Firefox browser, but will play on Safari, Chrome, Microsoft Edge.

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I've tried disabling hardware acceleration, disabling all add-ons, refreshing the browser, reinstalling the browser, and starting the browser in safe mode. NONE of these work for this one specific video that I uploaded. I've never had this issue before

I've tried disabling hardware acceleration, disabling all add-ons, refreshing the browser, reinstalling the browser, and starting the browser in safe mode. NONE of these work for this one specific video that I uploaded. I've never had this issue before

Chosen solution

A private window does not share cache or cookies with the regular window, and so the issue could be either a problem cached file or a cookie that stores preferences or is keeping you logged in. (Private windows also have Content Blocking on by default, but unless this is an ad-related problem, that shouldn't be a factor.)

To reload a page bypassing cached files, you can use Ctrl+Shift+r.

If that doesn't make any difference, I suspect it's something related to saved YouTube cookies or being logged in.

In recent months, logged in users have reported some mysterious issues that couldn't be reproduced in anonymous access. I don't think I've seen an explanation for that.

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All Replies (9)

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Hi royalroy, does your Firefox support all the usual YouTube formats? You can check using this test page, look for blue checkboxes and any red X's:

https://www.youtube.com/html5

Assuming all is well there, could you compare the videos to see whether you notice any technical difference. While playing, right-click the video and choose "Stats for nerds". This will overlay a panel showing the video and audio codecs used. Does the one that doesn't work in Firefox use a different codec?

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Please provide a public link (no password) that we can check out. No Personal Information Please !

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Can you post a link to this YouTube video. so we can check this?

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  • deleted*

Modified by royalroy

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Do you get a specific error message? I'm attaching what I see in "Stats for nerds" in my Firefox.

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no specific error message, just infinite loading

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Do you notice any difference between being logged in to your Google/YouTube account and not being logged in? You can use a private window to test anonymous access if you are already logged in in your regular windows. (Right-click the link > Open Link in New Private Window)

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OH IT WORKS WHEN I'M IN A PRIVATE WINDOW!!!! Why is this the case... is there any fix?

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Chosen Solution

A private window does not share cache or cookies with the regular window, and so the issue could be either a problem cached file or a cookie that stores preferences or is keeping you logged in. (Private windows also have Content Blocking on by default, but unless this is an ad-related problem, that shouldn't be a factor.)

To reload a page bypassing cached files, you can use Ctrl+Shift+r.

If that doesn't make any difference, I suspect it's something related to saved YouTube cookies or being logged in.

In recent months, logged in users have reported some mysterious issues that couldn't be reproduced in anonymous access. I don't think I've seen an explanation for that.