Mozilla VPN is currently experiencing an outage. Our team is actively working to resolve the issue. Please check the status page for real-time updates. Thank you for your patience.

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.

Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system.

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by cor-el

tritium
tritium
more options

Thunderbird wont open/start and gives this message in a message window

Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system.

Any Help would be appreciated.

Thunderbird wont open/start and gives this message in a message window Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system. Any Help would be appreciated.

Chosen solution

See:

Read this answer in context 👍 0

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Chosen Solution

See: