take a look at this post for a workaround

It’s an ad blocker blocker they’ve been implementing as of late. I don’t think you’ll be banned if you continue disregarding it, but they do eventually entirely block the video player unless you disable the ad blocker. However, in my experience, uBlock can block that message to resume normal watching. (Double Edit: This method did stop working on the 15/10/23, but started working again a day later. I guess it’s a question of if the filters have been updated to counter YouTube’s updates, though I did notice that viewing in a private tab worked when regular browsing didn’t.) Go to the extension’s settings/dashboard (on Firefox, do this by clicking on its icon in the top right, then the settings icon in the subsequent pop-up), then the Filter Lists, click “Purge all caches”, then “Update now”. Open an entirely new YouTube tab (or hard reload your current one by pressing Control + Shift + R), and the message should stop appearing, at least for the time being.

I’ve just been clicking the X to close that popup and nothing has happened to me.

Also seeing this on Firefox with latest Ublock and newest ruleset. So far, I just accept then reload without actually changing anything and it works… For now.

Time once again for me to share something helpful that can be used with one of my favorite extensions

{
    "createdBy": "Redirector v3.5.3",
    "createdAt": "2023-10-12T00:00:00.357Z",
    "redirects": [
       {
            "description": "YouTube>YewTube",
            "exampleUrl": "https://youtube.com/watch?v=ckatAzemRHk/",
            "exampleResult": "https://yewtu.be/watch?v=ckatAzemRHk/",
            "error": null,
            "includePattern": "^(?:https?):\\/\\/(?:\\w+\\.)?youtube\\.com(.+)?\\b",
            "excludePattern": "",
            "patternDesc": "Redirect Youtube",
            "redirectUrl": "https://yewtu.be$1",
            "patternType": "R",
            "processMatches": "noProcessing",
            "disabled": false,
            "grouped": false,
            "appliesTo": [
                "main_frame"
            ]
        },
    ]
}

deleted by creator

I use the Invidious method; whenever I want to watch or share a YouTube video, I’ll copy and paste the section after the YouTube domain to the suffix of an Invidious domain.

For example, I take the “watch?v=fIvXc5D_Xjg” from https://youtube.com/watch?v=fIvXc5D_Xjg and paste it to the end of https://yt.artemislena.eu/.

This may also be a temporary work around, as YouTube can and will disrupt Invidious sites too if they accumulate enough traffic. The best long term solution is to encourage artists, journalists, and entertainers to share their free videos on PeerTube instances, and support federated video hosting.

i just clicked the x in the corner and continued on my merry way 🙂

I highly recommend grabbing the libredirect extension and having all youtube links redirect to freetube.

https://addons.mozilla.org/en-US/firefox/addon/libredirect/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search

https://github.com/FreeTubeApp/FreeTube