Microsoft is retiring the SharePoint Add-In model as part of the modernization of the Microsoft 365 platform and its shift toward modern, secure, and high-performance extensibility models such as the SharePoint Framework (SPFx).

Teamsware solutions are NOT affected!

• March 1, 2024: No new Add-Ins accepted for marketplace listing.
• July 1, 2024: Add-Ins can no longer be acquired from the public marketplace.
• November 1, 2024: New Microsoft 365 tenants can no longer use SharePoint Add-Ins.
• April 2, 2026: Full retirement – all SharePoint Add-Ins stop working for all tenants.

🧩 What is affected?

• SharePoint-hosted Add-Ins (JavaScript-based)
• Provider-hosted Add-Ins (externally hosted, ACS-based)

👍 What remains supported?

• SharePoint Framework (SPFx): remains the recommended, modern, and supported extensibility platform. It is not affected by this retirement.

🛠️ Recommended Actions

• Assessment: Identify existing Add-In usage using internal or tenant assessment tools.
• Plan migration: Transition to SPFx or comparable modern solutions.
• Contact vendors: Request updated versions that no longer rely on the Add-In model.

❓ FAQ

🔍 Why is Microsoft retiring SharePoint Add-Ins?

To promote modern, secure, and future-ready extensibility models — especially SPFx.

🔧 What should I do if I am still using Add-Ins?

Migrate early to SPFx-based solutions or SaaS integrations to avoid service interruption.

📅 Will there be an extension beyond 2026?

No. Microsoft has confirmed that April 2, 2026 is the final retirement date with no extensions.