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

Wo archive tread sia. Meɖekuku bia biabia yeye ne ehia kpeɖeŋu.

Cannot uninstall Thunderbird 38.5.1 or 38.7.2 in Windows 10

  • 1 ŋuɖoɖo
  • 1 masɔmasɔ sia le esi
  • 16 views
  • Nuɖoɖo mlɔetɔ Matt

Hank
Hank
more options

When I start Thunderbird v 38.7.2, I get the message "Couldn't load XPCOM." Then I try to uninstall Thunderbird and notice that both v 38.5.1 and v 38.7.2 are on the app list. I tried to uninstall them and both failed. Then I tried to install the latest version, 45 and a message appears that I must reboot to let an older version of Thunderbird uninstall before installing the latest version. This error does not go away no matter how many times that i REBOOT. This is using Windows 10 OS.

When I start Thunderbird v 38.7.2, I get the message "Couldn't load XPCOM." Then I try to uninstall Thunderbird and notice that both v 38.5.1 and v 38.7.2 are on the app list. I tried to uninstall them and both failed. Then I tried to install the latest version, 45 and a message appears that I must reboot to let an older version of Thunderbird uninstall before installing the latest version. This error does not go away no matter how many times that i REBOOT. This is using Windows 10 OS.

All Replies (1)

Matt
Matt
  • Moderator
  • Top 10 Contributor
more options

The windows 10 installer is stuck in a loop, I suggest you ask Microsoft how to fix it.