Keep your emails, events, and contacts syncing without disruption by transitioning your Inbox’s Microsoft Office 365 connection to Microsoft Graph by October 1, 2026. Microsoft is retiring Exchange Web Services (EWS) in October 2026, making Microsoft Graph the new, secure, and scalable standard for authentication.
Where: This change applies to Lightning Experience in all editions.
When: This feature is available starting in February 2026.
Who: The upgrade is available if Inbox and Einstein Activity is set up to use Microsoft Office 365. If you’re setting up Inbox with Microsoft 365 starting in Spring ’26, you’re automatically authenticated by using Microsoft Graph.
Why: This upgrade is essential to align with Microsoft’s evolving security standards and to avoid potential disruptions as EWS reaches its end of life in October 2026. By transitioning to Microsoft Graph, Salesforce makes sure that your organization remains compliant and competitive, with improved support for modern features and enhanced user-level authentication.
How: Before and during the upgrade, make sure that your Azure admin has granted Microsoft Graph consent. Then, use the upgrade tool to consent and complete the upgrade. Users are required to reconnect to their Microsoft Office 365 accounts to complete the connection transition.
