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.

Every time I open Firefox it opens between 40 and 50 windows, how can i stop this?

  • 1 reply
  • 3 have this problem
  • 1 view
  • Last reply by cor-el

AnonymousUser
AnonymousUser
more options

Almost every time I open Firefox I get multiple windows and my computer slows to the point it almost freezes. On one occasion it opened more than 100 windows.

This happened

Every time Firefox opened

== About 3 or 4 months ago

Almost every time I open Firefox I get multiple windows and my computer slows to the point it almost freezes. On one occasion it opened more than 100 windows. == This happened == Every time Firefox opened == About 3 or 4 months ago

All Replies (1)

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

See Firefox repeatedly opens empty tabs or windows after you click on a link

Delete mimeTypes.rdf in the Profile Folder