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I have Thunderbird on Ubuntu 12.04 and every time I open it, it loads twice. Two windows are opened.

To be clear, if I have Thunderbird closed (not minimized) and click on Mail, in the tray bar, it opens 2 main windows.

I have had installed several add-ons, including FireTray and "Minimize to Tray Revived", but now I have removed all of them. Actually I can disable all the add-ons and it still happening.

Any ideas?

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5 Answers 5

Reset to default
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Follow these steps:

  1. Disable "MinimizeToTray Plus" in menu "Tools/Add-Ons"
  2. Exit Thunderbird (be sure that the process is not running)
  3. Open Thunderbird (in my case, I had the same two windows problem the first time)
  4. Now Thunderbird runs without the MinimizeToTray Plus add-on
  5. Close one of the window
  6. Re-enable your "MinimizeToTray Plus" add-on
  7. Exit and restart

From this forum thread: http://forums.mozillazine.org/viewtopic.php?f=39&t=1962329

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  • Thanks! It worked. Steps reproduced here: 1. Disable "MinimizeToTray Plus" in menu "Tools/Add-Ons/" 2. Exit Thunderbird (Be sure that the process is not running) 3. Open Thunderbird (In my case, I had the same two windows problem the first time) 4. Now Thunderbird runs without the MinimizeToTray Plus add-on. 5. Close one of the window. 6. Re-enable your "MinimizeToTray Plus" add-on 7. Exit and restart
    – Diego Jancic
    Dec 4, 2012 at 15:04
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    I had a similar behaviour, for me it was caused by the FireTray extension. For the more experienced: You can also solve it by manually editing the session.json: binfalse.de/2016/09/25/…
    – binfalse
    Nov 27, 2016 at 23:23
  • Thanks! Fixed the issue with FireTray. It was driving me crazy!
    – Delorean
    Mar 8, 2017 at 20:33
  • Had this issue with FireTray aswell, following the steps solved it.
    – Hans
    Aug 20, 2019 at 8:55
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I had the same on one of the machine I manage and the solution was pretty simple in the end. On one of the two windows just do file->Close. It closes just that window and not the other. Then close TB and reopen it.

I've seen quite a lot of mention of problems with add-ons, but in this case there were none and none of the other solutions worked.

Ian

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  • This is the only solution that worked for me. Ctl + W or File>Close to close all extra tabs and windows. On next resart, only the last one is restored
    – Rémi B.
    May 5, 2017 at 8:54
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In preferences of FireTray (my version is 0.4.8) please check the field:

[] Only last window can be hidden

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What I did to solve this problem was to

  1. Uninstall all Extensions (Add-ons) on Thunderbird
  2. Restart Thunderbird
  3. Reinstall all Extensions (Add-ons)
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I just encountered this issue with thunderbird on Xububtu 14.04. What worked for me: Select 'Clear Recent History' from the Tools drop down menu, and clear everything.

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