Thunderbird denies access to Google account

I can't access to my personal Google account from Thunderbird. Thunderbird configuration is OK. Cookies authorised. e-mail account connection process goes this way: - I enter name and e-mail address - I confirm standard configuration found in Thunderbird's FAI database. - Google asks me to confirm that I authorise Thunderbird to share mail, contacts and agenda informations (I was asked my Google pwd only the first time I tried the process). - I confirm my consent - Back to Thunderbirds account configuration window, with "authentication error". Similar failure when I try to only connect to the contact list or to my calendars (which is my initial will), also from a scholar Google account. No change after update from 149 .0.2 to 150.0