I've just in stalled magento 2.4.0 and trying to log into the admin area.
it returns a message telling me I have to set up two factor authentication and that I've been set an email.
You need to configure Two-Factor Authorization in order to proceed to your store's admin area
An E-mail was sent to you with further instructions
I've checked every email I have and there is no email.
this is on a live server