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.

Buscar en Ayuda

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

Why I get "Java Script Application" Error: Div is null every time I open YouTube video?

  • 5 respuestas
  • 33 tienen este problema
  • 5 visitas
  • Última respuesta de philipp

more options

Every time I click on ANY YouTube video, I get a window with the message "Java Script Application Error: Div is null" and I have to click OK. Then the exact same message window opens again and I have to click OK again before I can do anything else. The video will start but unless I click OK, I have no control over anything. It's very annoying. What is causing this and what can I do to fix this issue?

Every time I click on ANY YouTube video, I get a window with the message "Java Script Application Error: Div is null" and I have to click OK. Then the exact same message window opens again and I have to click OK again before I can do anything else. The video will start but unless I click OK, I have no control over anything. It's very annoying. What is causing this and what can I do to fix this issue?

Todas las respuestas (5)

more options

hello, can you try to replicate this behaviour when you launch firefox in safe mode once? if not, maybe an addon is interfering here...

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

more options

It does not occur in safe mode.However, I disabled all my add-ons and tried (after launching Firefox normally again) and the problem still occurs.

more options

which addons do you have installed? probably also try removing the ones that directly change the behaviour or add functionality to youtube.com...

more options

Yes I removed "Youtube downloader" then no more pop up windows. Do you know which YouTube downloader works without this kind of issues?

more options