Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Archived

Thunderbird help

brice_sf

I'm not sure I'm in the right place but I have a problem opening my Thunderbird email. It keeps telling me that it's open and to close but nothing happens. I can't close it and it's not actually open. I've rebooted my computer but Thunderbird still insists it's open. What can I do? I can't access and folders or emails. Should I uninstall it and reinstall it? Really hope you can help me

Brice

I'm not sure I'm in the right place but I have a problem opening my Thunderbird email. It keeps telling me that it's open and to close but nothing happens. I can't close it and it's not actually open. I've rebooted my computer but Thunderbird still insists it's open. What can I do? I can't access and folders or emails. Should I uninstall it and reinstall it? Really hope you can help me Brice

All Replies (1)

See if deleting the parent.lock file restores the ability to open TB:

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