Thunderbird: adding google oauth account fails
Attempting to add a gmail oauth account in TB fails authentication using verified account password. (The account requires two-factor authentication using an authenticator app, but haven't tried that as a password) I have removed the account from TB, and the saved passwords for the account. I then added the account back to TB but get the same "Failed authentication" notification without any opportunity to register a new password. I can not find a cookie to remove and retry the process.
Chosen solution
I was able to solve my problem by completely removing my google account and all connected data relating to it, then reinstalling it using the two-factor authentication for my account installation.
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I don't know about an "authenticator app". I don't recall having to involve anything like that and my Gmail account works as expected. You don't mention what version of Thunderbird you're using, but recent versions have a new feature called "Account Hub" which is classified as "experimental". Some people have had problems with it, though it's worked well for me. I have a feeling it works best with common email services like GMail, less so with more obscure ones. You might try turning it off (see Tools | Settings | General) and see if that helps.
Check out Google's troubleshooting suggestions if you haven't already.
Chosen Solution
I was able to solve my problem by completely removing my google account and all connected data relating to it, then reinstalling it using the two-factor authentication for my account installation.
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