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            Upgrade Microsoft Office 365 Authentication Method to Microsoft Graph in Inbox

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            Upgrade Microsoft Office 365 Authentication Method to Microsoft Graph in Inbox

            Microsoft is retiring Exchange Web Services (EWS) in October 2026. Microsoft Graph API replaces EWS and is more advanced, secure, and scalable. Reauthenticate Inbox to use Microsoft Graph with Microsoft Office 365 by August 03, 2026 to continue working without sync disruption.

            Required Editions

            Available in: Lightning Experience
            Available in: Unlimited, Einstein 1 Sales, and Agentforce 1 Sales Editions. Available for an extra cost in Professional and Enterprise Editions.
            User Permissions Needed
            To modify authentication method: Customize Application and Modify All Data

            Before you begin, confirm that your Azure admin has granted org-wide Microsoft Graph API access and permissions. See App ID for Microsoft Graph Authentication. The admin setting up the connection from Microsoft is required to be assigned the DirectoryRole of a Global Admin, Cloud Application Admin, or Application Admin.

            Starting Spring ’26, Salesforce Inbox configured to use Microsoft Office 365 is automatically authenticated by using Microsoft Graph. If you have configured Salesforce Inbox to use Microsoft Office 365 before Spring ’26, manually upgrade to Microsoft Graph by August 2026. After you upgrade Inbox to Microsoft Graph, users must reconnect to their Microsoft accounts to fully complete the upgrade.

            If Einstein Activity Capture is configured in your org and its authentication method hasn’t been upgraded to Microsoft Graph, this upgrade procedure upgrades the authentication method of Einstein Activity Capture and Salesforce Inbox to Microsoft Graph.

            Note
            Note If Einstein Activity Capture isn't set up and you upgrade Salesforce Inbox to Microsoft Graph, any future setup of Einstein Activity Capture with Microsoft 365 uses Microsoft Graph automatically.
            1. From Setup, in the Quick Find box, enter Inbox, and then select Setup Assistant.
            2. In the Upgrade to Microsoft Graph section, click Upgrade to Microsoft Graph to start the upgrade.

              The Upgrade to Microsoft Graph section in Setup Assistant.

            3. Consent to confirm that this upgrade requires each user to reconnect to their accounts to fully transition to Microsoft Graph.

              If Einstein Activity Capture is configured in the org but hasn’t upgraded to Microsoft Graph, go to Migrate Microsoft 365 Authentication Method to Microsoft Graph in Einstein Activity Capture.

            4. Click Finish to complete the upgrade to Microsoft Graph.

              Consent to upgrade to Microsoft Graph and click Finish.

            Each user must reconnect their account, or their email, event, and contact data stops syncing for their connected accounts in Inbox. Each user account continues to use EWS authentication until they reconnect their account.

            See Also

             
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