---
schema_version: "1"
id: bd30d0feda5065e398c3fd6cce9631a936cbc7dfa23c6f2718e538ce6a4b62c2
title: Upgrade Microsoft Office 365 Authentication Method to Microsoft Graph
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/sales/264-0-0/eac_ews_graph.md
canonical_url: https://help.salesforce.com/s/articleView?id=sales.eac_ews_graph.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 5efc10b3a894d3dafef755bd3bdfeb7b29b4389a0a9e095fcef5fcc20938c72d
description: Microsoft is retiring Exchange Web Services (EWS) for Microsoft Office 365 in October 2026. Microsoft Graph API replaces EWS. Upgrade the authentication method of Einstein Activity Capture, Inbox, and Lightning Sync to use Microsoft Graph to avoid service disruption.
products:
  - Sales Cloud
  - Cross Cloud
  - Service Cloud Voice
release: "264"
---
# Upgrade Microsoft Office 365 Authentication Method to Microsoft Graph

Microsoft is retiring Exchange Web Services (EWS) for Microsoft Office 365 in October 2026. Microsoft Graph API replaces EWS. Upgrade the authentication method of Einstein Activity Capture, Inbox, and Lightning Sync to use Microsoft Graph to avoid service disruption.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: Lightning Experience</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available with Einstein Activity Capture Standard in Sales in <strong>Starter</strong>, <strong>Pro Suite</strong>, <strong>Professional</strong>, and <strong>Enterprise</strong> Editions</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available with <strong>Unlimited </strong>Edition, <strong>Einstein 1 Sales Edition</strong>, and <strong>Agentforce 1 Edition</strong></td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available with Einstein for Sales, which is included in <strong>Einstein 1 Sales Edition</strong> and available for an extra cost in <strong>Enterprise</strong> and <strong>Unlimited</strong> Editions</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available with Sales Engagement, which is included with Sales in <strong>Performance</strong> and <strong>Unlimited</strong> Editions, and available for an extra cost in <strong>Professional</strong> and <strong>Enterprise</strong> Editions</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available with Revenue Intelligence, which is available for an extra cost in <strong>Enterprise</strong> and <strong>Unlimited</strong> Editions</td></tr></tbody></table>

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](https://help.salesforce.com/s/articleView?id=sales.activity_capture_graph_api.htm&release=264.0.0&type=5). 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.

- **[Microsoft Graph Authentication in Einstein Activity Capture](https://help.salesforce.com/s/articleView?id=sales.eac_graph_migration.htm&release=264.0.0&type=5)**  
    Starting Spring ’26, Einstein Activity Capture configured to use Microsoft Office 365 is automatically authenticated by using Microsoft Graph. If you set up Einstein Activity Capture to use Microsoft Office 365 before Spring ’26, upgrade to Microsoft Graph by October 1, 2026 to avoid service disruption.
- **[Start Microsoft Graph Upgrade for Org-Level Connections](https://help.salesforce.com/s/articleView?id=sales.eac_start_migration_org_level.htm&release=264.0.0&type=5)**  
    Follow the prompts in the Setup to start the process. After you complete the upgrade, you can't roll back to Exchange Web Services (EWS).
- **[Start Microsoft Graph Upgrade for User-Level Connections](https://help.salesforce.com/s/articleView?id=sales.eac_start_migration_user_level.htm&release=264.0.0&type=5)**  
    Follow the prompts in Setup to start the process. After you complete the upgrade, you can’t roll back to Exchange Web Services (EWS).

#### See Also

- [Microsoft Graph Authentication in Einstein Activity Capture](https://help.salesforce.com/s/articleView?id=sales.eac_graph_migration.htm&release=264.0.0&type=5 "Starting Spring ’26, Einstein Activity Capture configured to use Microsoft Office 365 is automatically authenticated by using Microsoft Graph. If you set up Einstein Activity Capture to use Microsoft Office 365 before Spring ’26, upgrade to Microsoft Graph by October 1, 2026 to avoid service disruption.")
- [Microsoft Graph API](https://help.salesforce.com/s/articleView?id=sales.activity_capture_graph_api.htm&release=264.0.0&type=5 "Starting Spring ’26, Einstein Activity Capture configured to use Microsoft Office 365 is automatically authenticated by using Microsoft Graph. Microsoft is retiring Exchange Web Services in October 2026 for Microsoft Office 365, and Microsoft Graph API replaces Exchange Web Services as a more advanced, secure, and scalable solution. Microsoft Graph exposes REST APIs and client libraries to access data on Microsoft Office 365.")
- [Start Microsoft Graph Upgrade for User-Level Connections](https://help.salesforce.com/s/articleView?id=sales.eac_start_migration_user_level.htm&release=264.0.0&type=5 "Follow the prompts in Setup to start the process. After you complete the upgrade, you can’t roll back to Exchange Web Services (EWS).")
- [Start Microsoft Graph Upgrade for Org-Level Connections](https://help.salesforce.com/s/articleView?id=sales.eac_start_migration_org_level.htm&release=264.0.0&type=5 "Follow the prompts in the Setup to start the process. After you complete the upgrade, you can't roll back to Exchange Web Services (EWS).")
- [Deprecation of Exchange Web Services in Exchange Online](https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/deprecation-of-ews-exchange-online)