Microsoft has set April 2, 2026 as the hard deadline for retiring SharePoint 2013 Workflows, SharePoint Add-Ins, Azure ACS authentication, and Domain Isolated Web Parts. No extensions will be granted.
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Key Facts:
Deadline: April 2, 2026 (hard cutoff)
SharePoint 2013 Workflows: Replace with Power Automate
SharePoint Add-Ins: Replace with SPFx solutions
Azure ACS: Replace with Microsoft Entra ID
Domain Isolated Web Parts: Convert to regular web parts
Action required: Audit and migrate all affected components before deadline
Deadline: April 2, 2026 (hard cutoff)
SharePoint 2013 Workflows: Replace with Power Automate
SharePoint Add-Ins: Replace with SPFx solutions
Azure ACS: Replace with Microsoft Entra ID
Domain Isolated Web Parts: Convert to regular web parts
Action required: Audit and migrate all affected components before deadline
Organizations still running SharePoint 2013 Workflows should prioritize migration to Power Automate. Add-In hosted solutions must be rebuilt using SharePoint Framework (SPFx). Azure ACS-based authentication requires migration to Microsoft Entra ID (formerly Azure AD) app registrations.
Sources: Microsoft Learn · AdminDroid
