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

New version won't open on MacOS 10.13

  • 4 cavab
  • 1 has this problem
  • 2 views
  • Last reply by mail783

more options

I downloaded the recent Thunderbird update and now it won't open at all. I get the spinning wheel.

Thanks, Jean

I downloaded the recent Thunderbird update and now it won't open at all. I get the spinning wheel. Thanks, Jean

Modified by Wayne Mery

All Replies (4)

more options

So your MacOS version is 10.13? Does starting Thunderbird in safe mode help ?

more options
more options

I've lost my old Thunderbird trying to install the new. I am running Sierra 10.13.6