To resolve the HTTP Error 403: Forbidden issue, try the following steps:

The "yt-dlp http error 403: forbidden retrying fragment" error is a common issue encountered by users of yt-dlp, a command-line YouTube video downloader. This error occurs when yt-dlp is unable to download a video due to a 403 Forbidden HTTP response from the YouTube server. In this paper, we will discuss the causes of this error, its implications, and provide a comprehensive guide on how to resolve it.

You can rotate User Agents to mimic different browsers. Add the following flag:

yt-dlp -U

Extract the failing fragment URL and try fetching it manually with curl using the same cookies/headers:

yt-dlp --user-agent "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.3" https://www.youtube.com/watch?v=VIDEO_ID