Retirement notice: MDE and XDR APIs retiring; migrate to Microsoft Graph Security API

Introduction We’re retiring the Microsoft Defender for Endpoint (MDE) API and XDR API and transitioning customers to the Microsoft Graph Security API. This update aligns our security integrations with a unified interface and schema across Microsoft Defender products. The Microsoft Graph Security API provides broader data coverage, improved consistency, and better scalability for automation and security workflows. When this will happen  Retirement start: February 6, 2026 Full retirement: February 1, 2027 After February 1, 2027, the MDE and XDR APIs will no longer function. How this affects your organization Who is affected:  Organizations using the MDE API or XDR API for automation, integration, or custom workflows. You are receiving this message because our reporting indicates your organization may be using these APIs. What will happen: The MDE and XDR APIs will stop functioning after February 1, 2027. Existing scripts, automations, and workflows that rely on these APIs will fail if not updated. The Microsoft Graph Security API will be the supported API for accessing Microsoft security data. No automatic migration will occur; manual updates will be required. What you can do to prepare Learn more: Compliance considerations No compliance considerations identified. Review as appropriate for your organization. Migrate all existing API workflows to the Microsoft Graph Security API by January 31, 2027. Update internal documentation, automation scripts, and integration endpoints to use the Microsoft Graph Security API. Communicate these changes to your security operations, engineering, and development teams. Review Microsoft documentation to plan your migration: Use the Microsoft Graph security API. If your organization uses custom solutions, validate that new queries and response schemas work as expected before the retirement date. Advanced hunting – Use the Microsoft Graph security API | Microsoft Graph | Microsoft Learn Migrate from the older APIs – Use the Microsoft Graph security API | Microsoft Graph | Microsoft Learn (to be retired) Microsoft Defender for Endpoint (MDE) API (to be retired) Microsoft Defender XDR API Message ID: MC1220762

The post Retirement notice: MDE and XDR APIs retiring; migrate to Microsoft Graph Security API appeared first on M365 Admin.