It's not asking me to login. I can play it embedded or click on Watch on YouTube. Although I'm probably already logged into YouTube in that browser. I guess a screenshot might help to identify where the roadblock is. Here is YouTube's answer to the question(emphasis added): https://support.google.com/youtube/answer/9879569?hl=en Why sign in to YouTube? To help you experience the benefits of signing in, we’re testing ways to remind people to sign in. This feature includes a sign in prompt that shows up when you’re using YouTube. If you see this prompt and don't want to sign-in at this time, you can dismiss it.