This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Firefox will not open Youtube videos

  • 1 antwoord
  • 1 het hierdie probleem
  • 5 views
  • Laaste antwoord deur Jeff Grossman

philip25
philip25
more options

This is a new Dell laptop with latest updates of Window 10 and Firefox 75.0 (64-bit) . Last laptop did not have this problem.

When I try to open a Youtube video, this is the error message. "The address wasn't understood. Firefox doesn't know how to open this address, because one of the following protocols (rtsp) isn't associated with any program or is not allowed in this context. You might need to install other software to open this address."

How can I resolve this, please?

This is a new Dell laptop with latest updates of Window 10 and Firefox 75.0 (64-bit) . Last laptop did not have this problem. When I try to open a Youtube video, this is the error message. "The address wasn't understood. Firefox doesn't know how to open this address, because one of the following protocols (rtsp) isn't associated with any program or is not allowed in this context. You might need to install other software to open this address." How can I resolve this, please?

All Replies (1)

Jeff Grossman
Jeff Grossman
more options

You are opening a link using the RTSP protocol but internet browsers use HTTP. Per this person: https://support.mozilla.org/en-US/questions/1278853 ...you should list RTSP so that FF will ask you what app to open (and you can choose your favorite rtsp-enabled media player).

HTH.