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.

Starting Thunderbird results in "Could not open XPCOM"

  • 1 reply
  • 0 have this problem
  • 1 view
  • Last reply by Wayne Mery

Jim Shirey
Jim Shirey
more options

Tried to open Thunderbird and got the message Could not open XPCOM

Tried to open Thunderbird and got the message Could not open XPCOM

Modified by Wayne Mery

All Replies (1)

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

Delete the Thunderbird PROGRAM directory. Redownload Thunderbird. Install Thunderbird.