I am updating thunderbird for my gmail account logins for several machines. In security settings, I changed the authentication method from normal password to 0auth2 for incoming and outgoing servers. Upon initial login by thunderbird to gmail after the changed setting, gmail sends a verification window which requests your user name, password and authorization for gmail to allow thunderbird access to my gmail account. The windows 11, 10 and windows 7 (yes don't laugh) machines allowed for smooth verification. My windows ViSTA machine provided a gmail window for verification but it arrives blank - there are no written words or fields to fill out with my username, password or authorization - I am aware about "non support" for older operating systems but there must be a way to obtain data on the verification screen - windows 7 machines worked ok - what may be the solution for the Vista machine (a gateway desktop with who knows what chip that was the cat's meow back then). Don't want to trash the machine. All was OK until June 1st gmail compliance procedures. Thanks all.