What is the authentication type on your gmail account, normal password or OAuth2? If it's the former, try the latter, and complete the authentication next time you connect to the account, when an authorization browser window should appear.

OAuth2 was enabled. While trying to set this up Google notified me of suspicious activity and stated:

Less secure app blocked Google blocked the app you were trying to use because it doesn't meet our security standards. Some apps and devices use less secure sign-in technology, which makes your account more vulnerable. You can turn off access for these apps, which we recommend, or turn on access if you want to use them despite the risks. Google will automatically turn this setting OFF if it's not being used.

So perhaps this new version of Thunderbird has been flagged as less secure?

There's something wrong with Google's OAuth process today. You can't add an account with OAuth, which normally doesn't depend on the less-secure setting. It's still possible to use normal password authentication, but 'less-secure apps' must be allowed.

https://support.mozilla.org/en-US/questions/1271710

I have a similar problem, not sorted by changing to "Normal password". I currently have a reminder set for the next few days, and each time I try to snooze it, I get the message that Provider for Google Calendar would like access to my Google account, with a login page to complete. When I complete the login, and try to snooze the reminder again, I get the same login message. This can go on as long as i have patience.

Colin said

I have a similar problem, not sorted by changing to "Normal password". I currently have a reminder set for the next few days, and each time I try to snooze it, I get the message that Provider for Google Calendar would like access to my Google account, with a login page to complete. When I complete the login, and try to snooze the reminder again, I get the same login message. This can go on as long as i have patience.

Google authentication will be fixed in TB 68.2.1, or you can apply the workaround from here.

Thanks for the update and workaround. I've spent too much time on it already so will probably wait patiently for the next update.

Update: I've just had a pop-up telling me download the latest version of Tbird, but the release notes seem to indicate that it is v68.2.0, which is what I have already! Any thoughts?

TB 68.2.1 is now available, so the notification is valid:

https://www.thunderbird.net/en-US/thunderbird/68.2.1/releasenotes/

The release notes are there, yes. But updates to 68.2.1 have NOT yet been enabled. Coming real soon.

Better now??

Hi Guys, still waiting patiently :-) I tried to download from the TB site, but it was offering 68.2.0 a couple of minutes ago. I'll keep checking, thanks.

OK, 68.2.1 now available and downloaded. I've also had to download Lightning and Provider again, but login to Google via my Gmail account is still failing, and so I can't synchronise my calendar. I can go through the Gmail login procedure successfully, and I get a window that says "Provider for Google Calendar wants to access your Google account". I click on "allow", and the window disappears, but my calendar is still blank.

Any ideas?

Colin.

PS Now my address book has vanished! This becoming a real bind.

Does either the address book issue or gdata issue improve with a restart of thunderbird?

> I've also had to download Lightning and Provider again

What caused you to do that? How were they presented in Addons Manager - enabled, disabled, missing?

Wayne Mery said

Does either the address book issue or gdata issue improve with a restart of thunderbird?

I see you've had address books disappear in the past: https://support.mozilla.org/en-US/questions/1188592

sfhowes said

TB 68.2.1 is now available, so the notification is valid: https://www.thunderbird.net/en-US/thunderbird/68.2.1/releasenotes/

i have 68.2.1, and it was not fixed. The solution (here) through config worked though ....

Hi Wayne,

Does either the address book issue or gdata issue improve with a restart of thunderbird?

No

> I've also had to download Lightning and Provider again What caused you to do that? How were they presented in Addons Manager - enabled, disabled, missing?

They were missing from 68.2.1. Incidentally, I still have 68.2.0 in my computer, which has my complete "All address book", but is missing my "personal address book", and several subfiles of addresses for a charity I work for. For all I know, I may still have files left over from 60.

Yes, I lost my addresses two years ago, and can't now remember how I recovered them (I'm in my 70s, and doing my best to keep up, but these upgrade downloads don't half give me grief). Thanks for trying to help.

Cheers,

Colin.

As posted on the other similar thread:

I'm afraid neither 68.2.1 nor the config change have worked for me. even after deleting and reloading my Gmail account, and restarting TB 68.2.1. However, now when I click Synchronize on my Lightning calendar, I no longer get a Gmail login window - nothing happens at all, and I still have a blank calendar.

I see that Wayne is trying to Contact Google for a solution now.

Colin.

Here is what worked for me:

Go to Tools->Options menu, select "Advanced" icon, select "General" tab, click "Config Editor" button,click "I accept the risk!", search for "general.useragent.compatMode.firefox" if it shows "false" double click to change to "true", enter your credentials one LAST time when it prompts. The repeating issue stopped for me. No idea why this works??

I would like to thank Yew Kay Yan for this process! It was driving me crazy having to enter Google Credentials Over and Over and Over...

Here is what worked for me:

Go to Tools->Options menu, select "Advanced" icon, select "General" tab, click "Config Editor" button,click "I accept the risk!", search for "general.useragent.compatMode.firefox" if it shows "false" double click to change to "true", enter your credentials one LAST time when it prompts. The repeating issue stopped for me. No idea why this works??

I would like to thank Yew Kay Yan for this process! It was driving me crazy having to enter Google Credentials Over and Over and Over...