We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

This thread was archived. Please ask a new question if you need help.

To access Manage your add on extensions ifn Firefox

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

James Seto
James Seto
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)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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