An anonymous reader quotes a report from Thurrott: Microsoft started testing a new Microsoft Edge browser based on Chromium a little while ago. The company has been releasing new canary and dev builds for the browser over the last few weeks, and the preview is actually really great. But if you watch YouTube quite a lot, you will face a new problem on the new Edge. It turns out, Google has randomly disabled the modern YouTube experience for users of the new Microsoft Edge. Users are now redirected to the old YouTube experience, which lacks the modern design as well as the dark theme for YouTube, as first spotted by Gustave Monce. And when you try to manually access the new YouTube from youtube.com/new, YouTube simply asks users to download Google Chrome, stating that the Edge browser isn’t supported. Ironically, the same page states “We support the latest versions of Chrome, Firefox, Opera, Safari, and Edge.” The change affects the latest versions of Microsoft Edge Canary and Dev channels. It is worth noting that the classic Microsoft Edge based on EdgeHTML continues to work fine with the modern YouTube experience.