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

How can I reinstall thunderbird instead of installing it.

  • 3 replies
  • 1 has this problem
  • 2 views
  • Last reply by Zenos

more options

My Thunderbird program became corrupted. The individual files still show, but the menu bars at the top have disappeared. I do not know how to restore the program as it was. I'd like to not "install" the program again for fear of losing data.

My Thunderbird program became corrupted. The individual files still show, but the menu bars at the top have disappeared. I do not know how to restore the program as it was. I'd like to not "install" the program again for fear of losing data.

All Replies (3)

more options

Uninstall and then re-install Lightning via the add-on manager. No data will be lost.

more options

What is Lightning

more options

The Calendar add-on. A recent version has caused many bad side effects. Updating, or removing it may help you.

Tools|Add-ons|Extensions