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

Unable to open Thunderbird

  • 1 reply
  • 1 has this problem
  • Last reply by Matt

more options

Thunderbird has been working great for years. Now it will not open. Error message "couldn't load XPCOM"

Thunderbird has been working great for years. Now it will not open. Error message "couldn't load XPCOM"

All Replies (1)

more options

just reinstall from thunderbird.net occasionally update go south and this error appears. Reinstalling replaces the settings that are needed.

Helpful?

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.