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.

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

opens two instances on opening thunderbird

  • 2 replies
  • 2 have this problem
  • 6 views
  • Last reply by Gene

more options

win 10, latest update Thunderbird 60.9.0 (32-bit) Opening Thunderbird results in two instances opening. I have three email accounts associated with Thunderbird. One instance opens to a secondary account and one opens to my primary account. The Primary account says "The account is being processed. Please wait until processing is complete to get messages." Closing the windows by Alt+F+C (or x) or by ctrl+w or closing with any of the taskbar options closes Thunderbird but on next restart two windows open as above. Disabling all add-ons makes no difference.

win 10, latest update Thunderbird 60.9.0 (32-bit) Opening Thunderbird results in two instances opening. I have three email accounts associated with Thunderbird. One instance opens to a secondary account and one opens to my primary account. The Primary account says "The account is being processed. Please wait until processing is complete to get messages." Closing the windows by Alt+F+C (or x) or by ctrl+w or closing with any of the taskbar options closes Thunderbird but on next restart two windows open as above. Disabling all add-ons makes no difference.

All Replies (2)

more options

Close the undesired window. Then close the desired window via the menu bar File - Exit. Press Alt or F10 to bring up the menu bar in case it's hidden.

more options

Apparently you did not read my entire post as I indicated that did not work. As an aside, after closing and opening Thunderbird several times, with all add-ons disabled, the second instance stopped opening. I have been enabling my add-ons, one at a time, and the problem has not yet returned. If I am able to determine the cause I will post it here, however, it may very well have just been an anomaly that cleared itself. Thanks for the offered solution.