ZTCA Configuration: Restrict Zoom sign-ins to trusted IPs using Entra Conditional Access

This guide describes how to configure Microsoft Entra ID Conditional Access to limit Zoom SSO sign-ins to approved IP addresses by creating Named Locations, a Conditional Access policy that blocks sign-ins from outside those IPs, validating in Report-only mode, and then enabling the policy; it also lists prerequisites and caveats such as the requirement for a Zoom vanity URL, the Zoom account owner bypass, and the need for static IPs.