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.

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

To access Manage your add on extensions ifn Firefox

  • 1 reply
  • 0 have this problem
  • 2 views
  • Last reply by cor-el

more options

I am trying to delete the add on extensions and when I click themes and extensions, manage your add on does not pop up. It is causing problem with trying to download videos with dwhelper because the add on extensions pop up not the video download. Please help. Thanks

I am trying to delete the add on extensions and when I click themes and extensions, manage your add on does not pop up. It is causing problem with trying to download videos with dwhelper because the add on extensions pop up not the video download. Please help. Thanks

All Replies (1)

more options

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.

  • switch to the Default System theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window