This guide walks you through onboarding your own Microsoft 365 tenant to our EWS integration. The app registration stays single-tenant and owned by you.

Prerequisites

• Microsoft 365 tenant with Exchange Online
• Admin role: Global Administrator, Exchange Administrator, or Application Administrator

Setup process

Step 1: Verify Exchange Online is active

1. Navigate to Microsoft 365 Admin Center
2. Go to Users → Active users
3. Select a user and confirm that
   • Exchange Online license is assigned
   • Outlook on the web opens successfully

Step 2: Ensure Modern Authentication is enabled

1. Navigate to Microsoft 365 Admin Center
2. Go to Settings → Org settings
3. Open Modern authentication
4. Ensure Turn on modern authentication is enabled

Step 3: Create an App Registration (Single Tenant)

1. Navigate to the Microsoft Entra Admin Center
2. Go to Entra ID → App registrations
3. Click New registration
4. Configure:
   • Name: Kyrok EWS Integration
   • Supported account types: Accounts in this organizational directory only (Single tenant)
   • Not required for application (server-to-server) access. If the portal requires a value, use http://localhost.