Prerequisites To install and authenticate the app, you need to provide the following input: Client ID • Navigate to the “Azure Active Directory” • Go to App Registrations (if you don’t have an existing App, create a new app registration) • Then open your App • Copy “Application (client) ID” Key (Secret Key) • Navigate to Azure Active Directory • Go to App Registrations • Then click “Certificates & secrets” on the left panel • Click on “New client secret” • Copy the Secret Key given as “Value”. Active Directory Domain • Navigate to Azure Active Directory • Go to Overview • Copy Primary Domain / Tenant Id. Steps to assign permissions 1. Navigate to Azure Active Directory 2. Go to App Registrations 3. Select your app 4. Go to API Permissions 5. Click on “Add Permissions” 6. Click on “Microsoft Graph” 7. Click on “Application Permissions” 8. Assign the following permissions to your app: Delegated Permissions i. User.Read ii. User.Read.All iii. User.ReadBasic.All iv. Chat.Create v. Chat.Read vi. Chat.ReadWriteAll viii. ChatMessage.Read Application Permissions i. Chat.Create ii. Chat.Read.All iii. Chat.ReadBasic.All iv. Chat.ReadWrite.All v. ChatMessage.Read.All vi. User.Read.All vii. User.ReadBasic.All viii. User.ReadWrite.All 9. Make sure you "Grant admin consent" for all the permissions you assign