Platforms change how they sign the video URLs, causing older yt-dlp signatures to fail.
The 403 Forbidden error is typically a validation refusal at the media URL level. Here are the primary reasons for this error in 2026: ytdlp forbidden
In October 2021, the developers of yt-dlp announced that the program had been blocked by YouTube, rendering it ineffective. This move was seen as a direct response to the increasing popularity of yt-dlp and other video downloading tools, which YouTube perceived as a threat to its content distribution and monetization strategies. The "forbidden" status refers to the measures taken by YouTube to prevent yt-dlp and similar tools from accessing its platform. Platforms change how they sign the video URLs,