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Firefox can't play twitch Error #4000

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Hello , i have some issues with the firefox . When i want to watch twitch or youtube or any media i get this error : " This video is either unavailable or not supported in this browser. (Error #4000) " The problem came when i updated my windows today . I watched the other browsers like Edge or Chrome and they can play twitch and youtube. Twitch app is still working in my computer. Idk what am i need to do . Update : I can't play live streams on youtube.

Hello , i have some issues with the firefox . When i want to watch twitch or youtube or any media i get this error : " This video is either unavailable or not supported in this browser. (Error #4000) " The problem came when i updated my windows today . I watched the other browsers like Edge or Chrome and they can play twitch and youtube. Twitch app is still working in my computer. Idk what am i need to do . Update : I can't play live streams on youtube.