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

Thunderbird has an extremely slow startup when it can access Mac contacts

  • 1 reply
  • 0 have this problem
  • 2 views
  • Last reply by Wayne Mery

more options

I am using Thunderbird 115.5.2 (64-bit) on Mac OS 14.1.2 (23B92).

Since its installation, its startup has been always slow: several seconds with a blank window and the spinning wheel. The startup is slow when Thunderbird has access to the Mac Contacts.

If you go to System Settings, Privacy & Security, Contacts and prevent Thunderbird to access the Contacts, then its startup time is decent. It seems overall snappier.

Clearly, without having access to Contacts, the use of Thunderbird is slightly annoying.

Why is it so slow when accessing Contacts? Is there anything I can do on my side to let it access the Contacts and stay fast?

I am using Thunderbird 115.5.2 (64-bit) on Mac OS 14.1.2 (23B92). Since its installation, its startup has been always slow: several seconds with a blank window and the spinning wheel. The startup is slow when Thunderbird has access to the Mac Contacts. If you go to System Settings, Privacy & Security, Contacts and prevent Thunderbird to access the Contacts, then its startup time is decent. It seems overall snappier. Clearly, without having access to Contacts, the use of Thunderbird is slightly annoying. Why is it so slow when accessing Contacts? Is there anything I can do on my side to let it access the Contacts and stay fast?

All Replies (1)

more options

lordthistle said

Is there anything I can do on my side to let it access the Contacts and stay fast?

Sorry, no. https://bugzilla.mozilla.org/show_bug.cgi?id=1831673