How to Block User Access to Microsoft 365 Accounts
A variety of methods exist to block access to a user's Entra ID account from a complete block to a conditional access policy. In this article, we examine the various methods and debate the worth of each approach. Conditional access policies are the cleanest and most effective long-term solution, but you need Entra ID P1 licenses. If you don't have those licenses, maybe one of the other approaches will work for you.