I have been having authentication errors with one of my GMail accounts. I went digging and noticed that the authentication method was set to Normal Password. I know tha… (funda kabanzi)
I have been having authentication errors with one of my GMail accounts. I went digging and noticed that the authentication method was set to Normal Password. I know that at the end of May, Google started denying "less secure apps", so I switched the account authentication method to OAuth2.
When I hit "Get Messages", the OAuth2 window popped up as expected, and I entered my credentials and allowed access to Thunderbird. After that, still received the authentication failures.
After that, I read all the support articles I could find on this, and I tried everything anyone suggested. At this point, I have completely reinstalled Thunderbird fresh (I made sure to remove any old profiles in the %AppData% folder).
So there are no longer any old saved passwords being used instead, there is nothing of Thunderbird on my computer.
I am stuck at trying to add my GMail account. The OAuth2 window opens up, I enter my credentials and give Thunderbird access, and the error message that pops up below "Checking Password ..." is "Unable to log in at server. Probably wrong configuration, username or password."
I have double and triple-checked both username and password (and they are working in the OAuth2 window).
I have tried disabling AVG (the antivirus I use). I also disabled AVG and then turned off Windows Defender.
I even tried changing the "general.useragent.compatMode.firefox" setting to "true". That caused a different type of OAuth2 window to show, but still didn't work and got the same error.
Still no luck.
I can only assume at this point that Thunderbird is pulling the username/password from somewhere that I have no idea how to access and it is using that instead of the OAuth2 token being returned (which doesn't get saved).
Beyond that I am at a loss. Anyone with any ideas of what it might be?
Thanks,
Josh