Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

How do I stop a new window opening up when I start a new tab?

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

more options

When I open up a new tab, it also opens up a new window with all of my current tabs present. So I have 2-3 windows open, all with the same tabs. Closing a tab you're on will also close the respective window and vice-versa.

When I open up a new tab, it also opens up a new window with all of my current tabs present. So I have 2-3 windows open, all with the same tabs. Closing a tab you're on will also close the respective window and vice-versa.

All Replies (1)

more options

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.