Microsoft announced last year that they will begin blocking the assignment of the ApplicationImpersonation role in Exchange Online starting September 2024. By End of February 2025, this role and its feature set will be completely removed from Exchang
Microsoft Announcement: Retirement of RBAC Application Impersonation in Exchange Online
To avoid any service interruptions with your Humly Control Panel (HCP) booking system, we strongly recommend migrating from EWS to Microsoft Graph as soon as possible.
Required Steps for Migration:
- Prepare Microsoft 365 Graph APIs for HCP: Guide: Booking System Preparation for MS Graph
- Migrate HCP from EWS to Graph: Guide: Migrating Humly Control Panel to Graph
Please ensure this transition is completed before the deprecation deadlines to maintain uninterrupted service. If you have any questions or need assistance, feel free to reach out.