Move from Lightning Sync to Einstein Activity Capture

Microsoft announced the retirement of Exchange Web Services (EWS) for Microsoft Office 365 in October 2026. Lightning Sync configurations that use EWS won’t capture or sync data after this retirement.

To continue to sync data between your Microsoft account and Salesforce, migrate Lightning Sync to Einstein Activity Capture. After you finished the migration process, including granting users Einstein Activity Capture permissions and turning off Lightning Sync, upgrade from EWS to Microsoft Graph. We provide in-app tools for the migration and the upgrade, but you initiate the processes separately. You can’t sync data until both steps are complete. We recommend you plan for and complete this multi-step process before Microsoft disables EWS and you lose service.

We recommend all other Lightning Sync orgs also migrate to Einstein Activity Capture. It’s our long-term solution for syncing events and contacts between Salesforce and a connected Microsoft or Google account. Einstein Activity Capture also syncs email data, making it available to the Salesforce platform tools, including reports, automation workflows, and AI-powered agentic features.

Note If you use Lightning Sync in Government Cloud, you don’t have to migrate. Government Cloud is exempt from the Lightning Sync retirement.

• Benefits of Migrating to Einstein Activity Capture
  Einstein Activity Capture is the long-term solution for syncing data between your Microsoft or Google account and Salesforce. In addition to contact and event syncing, Einstein Activity Capture offers email sync, more control over your data, and access to AI and agent powered features. Migrate now before Lightning Sync retires in April 2027. If you use Lightning Sync with Microsoft Office 365 and Exchange Web Service (EWS), migrate by August 2026 to avoid service disruption.
• Working with Lightning Sync Migration Tool
  The migration tool makes the move from Lightning Sync to Einstein Activity Capture easy for you and smooth for your sales teams. See what’s moved automatically, and what benefits your users can expect.
• Can My Company Make the Move Using the Lightning Sync Migration Tool?
  Before you start the migration process, make sure that your company meets the requirements for using the migration tool. We also recommend that you familiarize yourself with the migration considerations, so that there are no surprises during your migration.
• Understand and Plan for Einstein Activity Capture User Permissions
  To complete your migration to Einstein Activity Capture, your users must be assigned an Einstein Activity Capture user permission. Until you do, your users’ contacts and events continue syncing with Lightning Sync, and users don’t get access to Einstein Activity Capture features. See which licenses include the user permission, and what users get with the different types.
• Start Your Migration to Einstein Activity Capture
  Find the Lightning Sync migration tool in Salesforce, and start the migration process. Don’t worry, before we start moving your stuff, the tool summarizes the major steps and runs a readiness check. Then you decide when you’re ready to start the move.
• Get Acquainted with Einstein Activity Capture
  Now that you’re set up for Einstein Activity Capture, you and your users can get acquainted with the product. See how it works and how you can troubleshoot issues. If you added Einstein Activity Capture features or settings to your users’ migrated sync configurations, introduce those changes to users and some other settings that are new to them. You can also remind users how to manage which contacts and events sync.