Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

thunderbird already active

more options

After a wondows 10 update, thunderbird gives a message: "Thunderbird is already running" and won't start.

Reboot didn't help.

I have uninstalled and reinstalled Thunderbird ( downloaded the latest version) No succes

help ...

After a wondows 10 update, thunderbird gives a message: "Thunderbird is already running" and won't start. Reboot didn't help. I have uninstalled and reinstalled Thunderbird ( downloaded the latest version) No succes help ...
Attached screenshots

All Replies (1)

more options