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.

Avatar for Username

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.

Rohkem teavet

Teema arhiveeriti. Please ask a new question if you need help.

Thunderbird won't start

  • 1 vastus
  • 0 on selline probleem
  • 2 views
  • Viimati vastas david

bstewart3
bstewart3
more options

Thunderbird suddenly won't launch. I get an error message that only one copy of Thunderbird can be open at a time. There is no other copy open (see image.

Thunderbird suddenly won't launch. I get an error message that only one copy of Thunderbird can be open at a time. There is no other copy open (see image.
Attached screenshots

All Replies (1)

david
david
  • Top 10 Contributor
more options

If you use Windows, click open the Task Manage and scroll active tasks. Sometimes, Thunderbird closes but does not shut down. You can highlight and click 'end task' to close it.