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.

Learn More

This thread was archived. Please ask a new question if you need help.

I get a "Close Thunderbird" message when I open the app

  • 3 replies
  • 4 have this problem
  • 22 views
  • Last reply by sfhowes

Timbbull
Timbbull
more options

When I open Thunderbird I get the error message "Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window." I cant see an older Thunderbird process to close, and Thunderbird is actually working fine. If I click the close button Thunderbird closes and re-opens

When I open Thunderbird I get the error message "Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window." I cant see an older Thunderbird process to close, and Thunderbird is actually working fine. If I click the close button Thunderbird closes and re-opens

All Replies (3)

christ1
christ1
  • Top 25 Contributor
more options

http://kb.mozillazine.org/Profile_in_use

bowers_blackbird
bowers_blackbird
more options

I have a similar problem, but TB does not work at all. My Thunderbird app has gotten corrupted. I get the message"Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window." clicking on the close button does nothing, in a moment I get the same message back. I tried deleting Thunderbird and re-installing - no change, i still get the message. Even after shutting done several times and even pulling the power after shutting down. How can I get my Thunderbird back?

sfhowes
sfhowes
  • Top 10 Contributor
more options

Did you delete the lock file as explained in the kb article?

http://kb.mozillazine.org/Profile_in_use#Remove_the_profile_lock_file