The other thread you're referring to was merely the user not understanding what was happening. There was no problem to solve there, it was working as expected, hence why no follow ups.

It isn't clear whether that's your case as well or not. Is it that Google keeps repeatedly asking you to authorise Thunderbird, even after you've completed the authorisation process? Or is it that you don't understand why it's doing so? Because if the latter, it could simply be that the OAuth token kept by Thunderbird to be able to connect to the server has expired and Google requires you to authorise Thunderbird again…

Yes, Google keeps repeatedly asking me to authorise TB to access my gmail. Every time I restart my machine start TB or just restart TB, it goes through the whole process again, rinse repeat. I just don't know how to renew the OAuth token. Something isn't right somewhere as I would have thought this to be quite seemless and transparent.

It could be that you disabled cookies at some point. They must be enabled for the authorisation process to complete successfully, as well as JavaScript:

https://support.mozilla.org/kb/automatic-conversion-google-mail-accounts-oauth20

Hi, I've gone through all the above and I'm still getting the same problem. My jaavascript was fine andd so were all other settings, except perhaps the "passwords"/tokens. I have several items against my email address, but there are extra parameters after the emaail address. These are as follows:-

oauth://accounts.google.com (https://www.googleapis.com/auth/carddav) oauth://accounts.google.com (https://www.googleapis.com/auth/calendar https://www.googleapis.com/auth/carddav https://mail.google.com/)

oauth://accounts.google.com (https://mail.google.com/ https://www.googleapis.com/auth/carddav https://www.googleapis.com/auth/calendar)

oauth://accounts.google.com (https://mail.google.com/ https://www.googleapis.com/auth/calendar https://www.googleapis.com/auth/carddav)

None of them have the basic -> oauth://accounts.google.com (https://mail.google.com/) They to do with calendars and webdav. I think this could be the problem but I cannot seem to recreate the correct token. I have two other gmail acoounts and they appear to be fine and have the correct setting, ie - oauth://accounts.google.com (https://mail.google.com/)

Not sure what to do here...

Each of those "scopes" refers to one of the things you may authorise Thunderbird access to (mail, contacts and calendar). I would expect as many of them to be included in the OAuth entry as you granted access to during the authorisation process.

Assuming you set up this account as IMAP, you may try recreating it as follows and see whether that solves the problem (additional steps would be necessary to ensure you don't lose mail stored locally on your computer if the account was set up as POP):

1. Quit Thunderbird if it's running.
2. Make a backup copy of your profile folder, just in case.
3. Launch Thunderbird.
4. Remove the account from Thunderbird (both info and data).
5. Remove all password entries associated with this account in Settings > Privacy & Security > Saved Passwords — not just the OAuth entries, also any IMAP and SMTP entries that may still be there, but only for the account that has the problem.
6. Restart Thunderbird and set up the account again.