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Will SharePoint Remote Event Receivers Work After Add-In Retirement?
Question details
The user is asking whether SharePoint Remote Event Receivers created through CSOM will continue to function after the retirement of SharePoint Add-Ins and Azure ACS.
- Product
- Microsoft SharePoint
- Device & OS
- not provided
- Scenario
- Planning future architecture for SharePoint customizations and remote event handling.
- Observed behavior
- Seeking official confirmation on the deprecation timeline and architectural support for Remote Event Receivers.
Audit your current SharePoint environment to identify any deployments relying on SharePoint Add-Ins, Azure ACS, or traditional Remote Event Receivers before the April 2026 deadline.
Migrate to SharePoint Framework (SPFx) and Webhooks
Microsoft highly recommends transitioning away from the retiring Add-In model to SharePoint Framework (SPFx) and webhooks to ensure your customizations remain fully supported.
SharePoint Add-Ins and Azure Access Control Service (ACS) are officially scheduled to be retired and will stop working in existing tenants on April 2, 2026.
To maintain functionality, developers must adopt modern alternatives such as SharePoint Framework (SPFx) for UI and web parts, and Microsoft Entra ID for authentication.
Review your SharePoint tenant to locate all active Add-Ins and Remote Event Receivers that depend on Azure ACS authentication.
Rebuild your SharePoint customizations using the modern SharePoint Framework, which natively supports Microsoft Entra ID (formerly Azure AD).
Replace traditional Remote Event Receivers with SharePoint Webhooks or Microsoft Power Automate flows to handle asynchronous list and library events reliably.
Consult Microsoft Q&A for Complex Architecture Scenarios
For specific enterprise implementations involving CSOM, RERs, and Microsoft Entra ID, reach out to Microsoft specialists on the official Q&A platform.
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Frequently Asked Questions
When will SharePoint Add-Ins officially stop working?
SharePoint Add-Ins, along with Azure ACS, are scheduled to be retired and will permanently stop working in all existing Microsoft 365 tenants on April 2, 2026.
What is the recommended alternative to SharePoint Add-Ins?
Microsoft strongly recommends migrating your custom solutions to the SharePoint Framework (SPFx), which provides a modern, responsive development model fully integrated with Microsoft 365.
Can I still use Azure ACS for SharePoint authentication?
No, Azure Access Control Service (ACS) is being retired concurrently with SharePoint Add-Ins. You must transition your applications to use Microsoft Entra ID (formerly Azure AD) for secure authentication.
How should I replace my existing Remote Event Receivers?
Traditional Remote Event Receivers (RERs) should be replaced with modern SharePoint Webhooks or by utilizing Microsoft Power Automate flows, which provide robust, asynchronous event handling.
