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

Every time I open Thunderbird, I get a message that Thunderbird is already running....and I get the troubleshooting tab in Thunderbird.

more options

Thunderbird does open; my email boxes are displayed in an appropriate tab, but I also get the troubleshooting tab. Plus I get the "Thunderbird is already running...etc". My profile was migrated from a Win 10 laptop to a Linux Mint 18.1 cinnamon laptop. HP ProBook 4540s 64-bit. See attached file.

Thunderbird does open; my email boxes are displayed in an appropriate tab, but I also get the troubleshooting tab. Plus I get the "Thunderbird is already running...etc". My profile was migrated from a Win 10 laptop to a Linux Mint 18.1 cinnamon laptop. HP ProBook 4540s 64-bit. See attached file.
Attached screenshots

Chosen solution

Open the profile folder Close Thunderbird Delete the file parent.lock. Restart Thunderbird

Read this answer in context 👍 0

All Replies (2)

more options

Chosen Solution

Open the profile folder Close Thunderbird Delete the file parent.lock. Restart Thunderbird

more options

Thanks Matt. Now Mother Nature can continue to make me bald and not Thunderbird.