Thunderbird 78.7 - How to sync Google contacts and calendar

Solution 1:

Problem solved. On the Mozilla forum, I received a reply, which worked like a charm. So let me summarize, for clarity's sake, the steps to take.

1. Tools/addons/search:
   "TbSync"
   "Provider for CalDAV & CardDAV"
   Both are installed straight into Thunderbird – no need to download first.

2. Edit/preferences/general
   Scroll to the bottom of that page and find: "Config editor"
   Open (you will get a warning, but "accept the risk") Scroll down till you find:
   "extensions.dav4tbsync.googlesupport"
   Click that line to change from false to true.

3. Edit/Synchronization settings/Account actions/Add new account/CalDAv & CardDav ->
   Find Google down the list, and click it.
   Add account name - Just a name. Call it anything, e.g. Work or Private
   Click "Next", and now you are in Google territory.

And, oh yes, you have to allow cookies in privay settings.

All your calendars, tasks and contacts will be there, definitely better than ever before, but the process should have been explained. Most people don't think of editing the config list; I certainly didn't.

Solution 2:

Probably you found the solution, if not, try the following, it worked with "TbSync" + "Provider for CalDAV & CardDAV" installed in a windows machine. Don't use auto mode and give: account name: "name for local book" user "gmail_account" password "your password" URL https://www.googleapis.com/carddav/v1/principals/"gmail_account"

I found the information here:

https://developers.google.com/people/carddav