Error 53002 - Application used is not an approved application for conditional access. User needs to use one of the apps from the list of approved applications to use in order to get access.
About Azure Activity sign-in activity reports:
Azure Active Directory's reporting tool generates 'Sign-in activity' reports that give you insights on who has performed the tasks that are enlisted in the Audit logs.
- All Sign-in activity reports can be found under the Activity section of Azure Active Directory.
- The default list view of Audit logs can be customized by adding additional fields.
- The reports can also be filtered to let you view only the activities that are relevant.
- Here is an example of how a sign-in activity report looks like:
User is not granted access since the application used is not approved for conditional access.
Auditing Azure AD environments with ADAudit Plus:
ADAudit Plus offers change monitoring for your Azure AD environment with the following features:
- Correlated view across hybrid environments
- Real-time alerts
- Schedulable reports
- Autonomous change remediation
- Comprehensive search
- Out-of-the-box compliance reports