This is what happened to the Firefox browser after it was updated.

https://rumble.com/hls-vod/6pmzu9/playlist.m3u8

The solution was to delete all saved data. Deleting cookies only might have solved it.

I also saw this problem in the Falkon web browser after the Linux Mint update. It was easier to fix there:

Tools > Cookies Manager > Deleted cookies for website that was "forbidden".

An old web browser still worked without any problems, the Elinks text-only browser.

Other thoughts

This could be a form of soft censorship. Push updates that make certain websites no longer work.

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Second source of same video:


https://pomf2.lain.la/f/zctnqu7s.mp4