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New CardDAV address book to sync Google contacts - "Failed to connect" error message

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I have followed this tutorial in order to have my Google contacts sync with Thunderbird with a CardDAV address book: [https://ekiwi-blog.de/en/25881/synchr.../synchronize-google-calendar-and-contacts-with-thunderbird-without-addons/]

On one of my computers this works brilliantly. On the other, after allowing Thunderbird access to my Google account I repeatedly get the error message “Failed to connect”. Please see attached screenshots.

I am connected to the Internet. I am 100% sure of my password and that it has been entered correctly. My Thunderbird is the latest version for my system (version 102.7.1). What could be the problem?

Many thanks.

(P.S. I have successfully Synced my Google Calendar with Thunderbird using iCal and CalDav so there should be no connection issue.)

I have followed this tutorial in order to have my Google contacts sync with Thunderbird with a CardDAV address book: [[https://ekiwi-blog.de/en/25881/synchronize-google-calendar-and-contacts-with-thunderbird-without-addons/|https://ekiwi-blog.de/en/25881/synchronize-google-calendar-and-contacts-with-thunderbird-without-addons/]] On one of my computers this works brilliantly. On the other, after allowing Thunderbird access to my Google account I repeatedly get the error message “Failed to connect”. Please see attached screenshots. I am connected to the Internet. I am 100% sure of my password and that it has been entered correctly. My Thunderbird is the latest version for my system (version 102.7.1). What could be the problem? Many thanks. (P.S. I have successfully Synced my Google Calendar with Thunderbird using iCal and CalDav so there should be no connection issue.)
Attached screenshots

All Replies (4)

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When you start from New Address Book, Add CardDAV Address Book, then enter your gmail address, don't enter anything in the Location, just click Continue - the Location is autodetected.

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sfhowes said

When you start from New Address Book, Add CardDAV Address Book, then enter your gmail address, don't enter anything in the Location, just click Continue - the Location is autodetected.

Thank you for your response, but the result is the same.

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I tested it before posting my reply, and it worked without error. Do you have any app, such as a VPN, that could be interfering? Is the gmail account already in place as a mail account?

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sfhowes said

I tested it before posting my reply, and it worked without error. Do you have any app, such as a VPN, that could be interfering? Is the gmail account already in place as a mail account?

Yes, as I said it worked perfectly on my other computer.

No VPN or add-ons. The gmail account is in place since years.

Modified by robert.d.hale