April Microsoft Changes: What's New And What's Gone?

Big changes are coming to Microsoft 365 this April! With 30+ updates, including must-know retirements and exciting new features, IT administrators must stay prepared.

Key Changes:

✅ MSOnline PowerShell Retirement – The MSOnline PowerShell module will be retired starting early April 2025. Migrate to Microsoft Graph PowerShell SDK to avoid disruptions.
✅ Azure AD Graph API Retirement – By April 15, 2025, Azure AD Graph API will be fully retired. Migrate applications to Microsoft Graph API or request a temporary extension.
✅ New Tenant Outbound Email Limits – Microsoft introduces Tenant External Recipient Rate Limits (TERRL), restricting outbound emails based on license type.
✅ Email Transfer Between Accounts in Outlook – The new Outlook for Windows and Web will support moving emails between different accounts.

🔗 More details: Microsoft 365 April 2025 Updates

You Should Know:

Migrating from MSOnline to Microsoft Graph PowerShell SDK
To avoid disruptions, replace deprecated MSOnline commands with Microsoft Graph PowerShell SDK equivalents:

 Install Microsoft Graph PowerShell module 
Install-Module Microsoft.Graph -Force

Connect to Microsoft Graph (with required permissions) 
Connect-MgGraph -Scopes "User.ReadWrite.All", "Directory.ReadWrite.All"

Example: Get all users (replacing Get-MsolUser) 
Get-MgUser -All

Migrating from Azure AD Graph API to Microsoft Graph API
Update applications using Azure AD Graph (graph.windows.net) to Microsoft Graph (graph.microsoft.com).

 Example: Get user details via Microsoft Graph API (REST) 
curl -H "Authorization: Bearer {access_token}" https://graph.microsoft.com/v1.0/users

3. Managing Tenant Outbound Email Limits (TERRL)

Check your tenant’s email limits using PowerShell:

 Get tenant email throttling policies 
Get-TransportConfig | fl Throttling

4. Testing Outlook Cross-Account Email Transfer

Ensure the latest Outlook updates are installed before testing:

 Check Outlook version (Windows) 
Get-ItemProperty "HKLM:\Software\Microsoft\Office\ClickToRun\Configuration" | fl VersionToReport

What Undercode Say:

Microsoft’s shift from legacy PowerShell modules and APIs to Microsoft Graph emphasizes modernization. Administrators must act quickly to avoid service interruptions. Key takeaways:
– Use Microsoft Graph PowerShell SDK for automation.
– Audit applications still using Azure AD Graph API.
– Monitor email limits to prevent throttling.
– Test Outlook features in a lab environment before rollout.

For deeper insights, visit: Microsoft Graph Documentation

Expected Output:

A structured migration plan with verified PowerShell commands, API updates, and Outlook testing steps to ensure compliance with Microsoft 365’s April 2025 changes.