TAP Temporary Access Pass
TAP is a time-limited passcode that allows users to register passwordless authentication methods and recover access to their account without needing a password. You can also use a TAP to set up Windows devices.
Stopping Microsoft Authenticator Requests
The Microsoft Authenticator can cause major disruption to business users if they don't have it setup.
For instance - Microsoft Authenticator called when setting up new PC or creating Windows pins.
Open up Microsoft Azure. You can get there via your Microsoft 365 admin center > Settings > Org Settings > Multi-factor authentication...
Once in Microsoft Azure... go to dashboard / properties.
https://portal.azure.com/#view/Microsoft_AAD_IAM/ActiveDirectoryMenuBlade/~/Properties
At the bottom there is a link ... "Manage Security Defaults"
You can then disable the security defaults.