IT Admin Change Calendar Microsoft 365
Project Online retires on September 30, 2026
Microsoft retires Project Online on September 30, 2026. Project Web App sites and data become unavailable, so migrate projects before then.
Product
Project Online
Announced
5 September 2025
Effective from
30 September 2026
Who is affected
Organizations using Project Online and Project Web App (PWA) sites for project portfolio management. Project desktop is not affected.
Admin roles to involve: Microsoft 365 admin, SharePoint admin, PMO / project admins
What administrators should do
Export or migrate Project Online / Project Web App (PWA) data before September 30, 2026. Evaluate Microsoft Planner, Project Server Subscription Edition, or another PPM tool as the destination. New Project Online tenant creation already ended on April 1, 2026.
What happens if this is ignored
After September 30, 2026, Project Web App sites and their project data are no longer available, risking permanent loss of unmigrated project data.
Official source
Microsoft Project Online is retiring: What you need to know
Published by Microsoft · Source dated 5 September 2025 · Checked 24 August 2026
Last verified 24 August 2026