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.

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 does FF open two windows when I open it? Why can't I close the second window without closing FF altogether?

  • 2 respuestas
  • 3 tienen este problema
  • 9 visitas
  • Última respuesta de cor-el

more options

After FF automatically updated it started opening two windows whenever I start FF. One window has the open tabs from my previous session and the other window has only the FF home page open in one tab, nothing else. I can't close either window without shutting FF down altogether. I have limited RAM (3GB), running Mac Lion, which eats up a lot of resources and now FF eats up the rest. It's a real pain in the ass.

After FF automatically updated it started opening two windows whenever I start FF. One window has the open tabs from my previous session and the other window has only the FF home page open in one tab, nothing else. I can't close either window without shutting FF down altogether. I have limited RAM (3GB), running Mac Lion, which eats up a lot of resources and now FF eats up the rest. It's a real pain in the ass.

Todas las respuestas (2)

more options

Try with Firefox in safe mode. If it doesn't work, create a new profile and transfer your data to the new profile. See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

more options

It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.

Delete the sessionstore.js [2] file and possible sessionstore-##.js [3] files with a number and sessionstore.bak in the Firefox Profile Folder.

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).

See also: