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Every time I launch Firefox 4 it opens 3 or 4 blank windows, no longer opens the tabs from the previous session and does not show my bookmarks sidebar.

  • 3 antwurd
  • 20 hawwe dit probleem
  • 4 werjeftes
  • Lêste antwurd fan woollymammoth

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I have to manually close the extra windows and restore the tabs from the previous session, and reopen the sidebar. In disgust I uninstalled Firefox 4 and reinstalled 3.6. Everything works fine in 3.6. Looks to me like Firefox 4 has many major bugs and is not yet ready for prime time. I'll stay with 3.6 for now.

I have to manually close the extra windows and restore the tabs from the previous session, and reopen the sidebar. In disgust I uninstalled Firefox 4 and reinstalled 3.6. Everything works fine in 3.6. Looks to me like Firefox 4 has many major bugs and is not yet ready for prime time. I'll stay with 3.6 for now.

Bewurke troch woollymammoth op

Alle antwurden (3)

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Same here, but seems to be increasing the number of windows opened with each restart, last was 50 windows!

Bewurke troch freakbeach op

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This can be a problem with the files sessionstore.js and sessionstore.bak in the Profile Folder

Delete sessionstore.js and sessionstore.bak in the Profile Folder

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder

If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well.
You will have to redo App Tabs and Tab Groups after deleting sessionstore.js.

See:

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In the past week this has happened twice again. I deleted the sessionstore files, everything was ok for a few days, then boom! lots of blank windows, etc. Deleted the files again, went along for a couple days, then boom! again. This time there's a new wrinkle. One of the windows that opens is not blank, it's a window from several days ago for a site I visited briefly.

At this point I am not going to delete sessionstore files, just go back to Firefox 3.6 and wait until there is an update to 4. Obviously 4 still needs work.