Posted Yesterday, 08:42 PM I don't use facebook very often, but sometimes I must for business.  It appears that Facebook did an upgrade some time ago that added two-factor authentication (2FA) as a default. Now I cannot log in because I had not set up 2FA. I have tried to set it up - using Microsoft Authenticator - but can't "connect" authenticator to facebook because I cannot log in.   Facebook help is useless. I have searched the net for someone with this problem, and finally actually found it listed on your site, but the problem was never resolved as far as I can tell.

https://www.bleepingcomputer.com/forums/t/776871/cant-log-in-to-facebook-without-2fa-but-cant-add-2fa-without-logging-in/

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