Remote Event Receivers in SharePoint Online will be retired

🚨 The Signal: SharePoint Online Remote Event Receivers (RERs) are being retired, with Azure ACS-based RERs already defunct and all RERs ceasing by July 1, 2027. This impacts custom solutions relying on SharePoint event notifications, requiring migration to webhooks or Microsoft Graph.

The Impact

Developers and solution owners using SharePoint Online RERs are affected, risking application functionality and potential security vulnerabilities if unpatched legacy integrations persist.

• Developers: Must re-architect custom SharePoint solutions.
• Solution Owners: Risk of application downtime and data integrity issues.
• Third-Party Vendors: May need to update their SharePoint integrations.
• Security Teams: Risk of unmanaged legacy code if not migrated.

The Action

1. Identify all SharePoint Online Remote Event Receivers in use.
2. Assess dependencies of identified RERs on business-critical applications.
3. Plan migration strategy to SharePoint webhooks or Microsoft Graph change notifications.
4. Develop and test replacement solutions using recommended alternatives.
5. Decommission all Remote Event Receivers before July 1, 2027.

Domain: SharePoint · Impact: high · Workload: SharePoint