Symptom
The URL is valid, but the site asks you to sign in, confirms your age, or returns an access error in ROSI.
Check
Confirm that the media opens in the browser you intend to use and that you are allowed to download it. ROSI’s browser-cookie option depends on the browser and operating system.
Steps
- Open ROSI’s download settings.
- Enable Hook into Web Browser and choose the browser profile offered for your platform.
- Retry the URL from the queue.
- Turn the option off again when you no longer need browser session cookies.
Expected result
yt-dlp can use the selected browser’s session cookies for the retry. The site’s own access rules still apply, and a cookie setting cannot grant access you do not have.
Security and recovery
Treat browser cookies like credentials. Use the option only on a device and account you control, never share exported cookie files, and sign out or clear the browser session if you suspect it was exposed. See About Browser Cookies for platform details.