Rated 5 out of 5 stars

by TheSarge on May 29, 2015 · permalink

Google changed their authentication regime. If it keeps asking for a password you need to go right-click on your calendar in the left-hand pane, delete it, and then set up again. Like so:

(1) First off, if you already have a Google Calendar set up in Thunderbird, delete it. Right-click on the calendar and select delete.

(2) Right-click on the empty space below "Calendar" in the left-hand pane.
(3) Select "New Calendar" and left-click that.
(4) Click "On the Network"
(5) Click "Next"
(6) Click "Google Calendar"
(7) Click "Next"
(8) If you already have your gmail account set up in Thunderbird as an email account, then select that gmail account from the leist you see here and click next. Otherwise, enter your full gmail account (including the part after the @ symbol).
(9) Click "Next"
(10) Google will ask for your password. Those of you without 2-step verification set up will want to read this: https://support.google.com/accounts/answer/6010255?hl=en
Those of you using 2-step verification need to read this page: https://support.google.com/accounts/answer/185833
(11) Select the calendars you have made and/or subscribe to in your Google Calendar account.
(12) Click "Next"
(13) Click "OK"

That's it, enjoy having access to your Google calendars from inside of Thunderbird/Lightning!