--- title: 'yt-dlp: "Sign in to confirm you''re not a bot" — Why It Happens and How to Fix It' description: yt-dlp failing with 'Sign in to confirm you're not a bot'? Here's why YouTube blocks it and every fix that works — updating yt-dlp, browser cookies, PO tokens, rate limiting, and clean IPs. url: https://vidkraken.com/blog/yt-dlp-sign-in-to-confirm-not-a-bot author: Vid Kraken published: '2026-07-17' updated: '2026-10-28' --- # yt-dlp: "Sign in to confirm you're not a bot" — Why It Happens and How to Fix It > yt-dlp failing with 'Sign in to confirm you're not a bot'? Here's why YouTube blocks it and every fix that works — updating yt-dlp, browser cookies, PO tokens, rate limiting, and clean IPs. Vid Kraken · Published 2026-07-17 · Updated 2026-10-28 Source: https://vidkraken.com/blog/yt-dlp-sign-in-to-confirm-not-a-bot If yt-dlp suddenly stops working with this: ```bash ERROR: [youtube] VIDEO_ID: Sign in to confirm you're not a bot. Use --cookies-from-browser or --cookies for the authentication. ``` …YouTube has flagged your request as automated and is refusing to serve the video without a signed-in session. This started appearing far more often in 2024–2025 as YouTube ramped up bot detection, and it's now one of the most common yt-dlp failures. Here's what triggers it and every fix that actually works, in the order most likely to resolve it. ## Why YouTube shows "confirm you're not a bot" YouTube decides a request looks robotic and demands proof of a real, signed-in user. The usual triggers: - **Your yt-dlp is out of date** — YouTube changed something and your version's extractor hasn't caught up. - **You're on a flagged IP** — datacenter IPs (AWS, GCP, Azure, most VPS/CI) are heavily scrutinized, so a script that works on your laptop fails on a server. - **No authentication** — anonymous requests get challenged more aggressively, especially at volume. - **Too many requests** — rapid, repeated calls from one IP trip rate-based bot detection. > **Closely related to 403 Forbidden** > > This message rejects the *metadata* request; a > [403 Forbidden](https://vidkraken.com/blog/yt-dlp-403-forbidden) rejects the *media* request. Same > root cause, and the fixes below overlap heavily. ## Fix 1: Update yt-dlp first Most "not a bot" errors are just a stale binary. YouTube breaks extractors constantly and the maintainers patch them quickly — but only new releases get the fix. **Standalone binary** ```bash yt-dlp -U ``` **pip** ```bash python3 -m pip install --upgrade --force-reinstall "yt-dlp[default]" ``` **pipx** ```bash pipx upgrade yt-dlp ``` > **apt/brew builds are stale** > > Distro packages of yt-dlp are often weeks behind — old enough to trigger this > error on their own. Use `yt-dlp -U` or pip, then check `yt-dlp --version`. ## Fix 2: Pass your browser cookies This is the fix YouTube's own error message suggests. Exporting cookies makes yt-dlp request as a logged-in user. 1. **Sign in to YouTube in a browser** Log into your Google account in Chrome, Firefox, Edge, Brave, or Safari as you normally would. 2. **Point yt-dlp at that browser's cookies** **Chrome** ```bash yt-dlp --cookies-from-browser chrome "https://www.youtube.com/watch?v=VIDEO_ID" ``` **Firefox** ```bash yt-dlp --cookies-from-browser firefox "https://www.youtube.com/watch?v=VIDEO_ID" ``` **cookies.txt file** ```bash yt-dlp --cookies cookies.txt "https://www.youtube.com/watch?v=VIDEO_ID" ``` On headless servers there's no browser to read, so export a `cookies.txt` on a normal machine and copy it over (the last tab above). > **Cookies are fragile to automate** > > Session cookies expire, and YouTube invalidates them faster when it sees them > used from a datacenter IP. Great for a one-off download; painful to keep alive > in production. ## Fix 3: Install a JavaScript runtime, and leave the player client alone Current yt-dlp needs a JavaScript runtime (Deno by default) to solve YouTube's URL challenges. Without one, it falls back to fewer player clients, and the ones left are more likely to be challenged: ```bash curl -fsSL https://deno.land/install.sh | sh yt-dlp -v "https://www.youtube.com/watch?v=VIDEO_ID" ``` Older advice, including earlier versions of this page, says to force `player_client=android`. Don't do that with current yt-dlp. The Android client now needs a PO token for most formats and can't use cookies, so forcing it usually makes things worse. yt-dlp's default clients include ones that don't need a token. If the `-v` output warns that formats "require a GVS PO Token", install a PO Token provider plugin. [yt-dlp not working](https://vidkraken.com/blog/yt-dlp-not-working) covers that warning and the others like it. ## Fix 4: Slow down Bulk downloads are the fastest way to get flagged. Add pauses and rate limits: ```bash yt-dlp --sleep-requests 2 --sleep-interval 5 --max-sleep-interval 15 --limit-rate 2M \ "https://www.youtube.com/watch?v=VIDEO_ID" ``` ## Fix 5: Get off flagged IPs If it only happens on a server, your IP reputation is the problem. Route through **residential proxies**, rotate IPs, or move the workload somewhere with cleaner reputation: ```bash yt-dlp --proxy "http://user:pass@residential-proxy:port" "https://www.youtube.com/watch?v=VIDEO_ID" ``` ## When the fixes stop scaling Each fix works for one download on one machine. In production, none of them stay fixed: yt-dlp needs re-updating every couple of weeks, cookies expire, player-client tricks change, and IPs get flagged. Teams that download YouTube programmatically end up maintaining a cookie-rotation-and-proxy side project instead of shipping their own product. > **Never see this error again.** > > Vid Kraken, our YouTube download API, handles bot detection, proxies and YouTube's > changes on our side. Send a URL, get a direct download from our CDN — no > sign-in prompts, no maintenance. > > [Start free](https://vidkraken.com/login) ## Quick reference | Situation | First thing to try | | ----------------------------- | --------------------------------------------- | | Happens on every video | Update yt-dlp (`yt-dlp -U`) | | Only age/members-only videos | `--cookies-from-browser` | | Only on a server / cloud host | Flagged IP — residential proxy | | During bulk downloads | `--sleep-interval` + `--limit-rate` | | Still stuck after updating | Install Deno, then a PO Token provider plugin | ## Frequently asked questions **Why does yt-dlp work on my laptop but not on my server?** Datacenter IPs (AWS, GCP, Azure, most VPS providers) are heavily bot-flagged, so YouTube challenges them far more often than a home connection. The same command can succeed locally and fail on a server purely because of IP reputation. **Is it safe to use my main Google account's cookies?** Using cookies ties the downloads to that account, and heavy automated use from a flagged IP can get the account rate-limited or challenged. For anything beyond occasional use, prefer a throwaway account or a managed API. **Do I have to keep updating yt-dlp forever?** With self-hosted yt-dlp, effectively yes — YouTube's changes guarantee recurring breakage, so you re-update, re-export cookies, and adjust flags on an ongoing basis. A managed API absorbs that maintenance instead.