Microsoft Project Online Is Retiring — What You Need to Know

On July 10, 2024, Microsoft officially announced that Project Online will be retired on September 30, 2026. If your organization relies on Project Online for project scheduling, resource management, or portfolio reporting, the clock is ticking.

This article covers everything you need to know: the official timeline, what happens to your data, Microsoft's recommended path, alternative platforms, and a step-by-step action plan so you're not caught off guard.

The Official Timeline

Microsoft published the retirement notice through the Microsoft 365 Admin Center and updated their product roadmap. Here are the key dates:

July 2024 — Microsoft announces Project Online retirement
October 2025 — New Project Online subscriptions no longer available for purchase
September 30, 2026 — Project Online is fully decommissioned; all tenants lose access
Post-retirement — Data is retained in SharePoint Online for a grace period, but Project Web App (PWA) interfaces are permanently disabled

If you're on a Project Online Professional or Premium subscription today, you have roughly 5 months remaining as of this writing.

What Happens to Your Data?

This is the question that keeps PMO directors up at night. Here's what Microsoft has confirmed:

Project Plans & Schedules

Your .mpp-equivalent data stored in Project Online's database will no longer be accessible through PWA or the Project Online Desktop Client's online features once the service shuts down. You can export plans to .mpp files before the deadline.

SharePoint Project Sites

The SharePoint sites associated with your projects (documents, issues, risks lists) will continue to exist in SharePoint Online. They won't be deleted, but the tight integration with Project Online's scheduling engine will break.

Resource Pool & Timesheets

The enterprise resource pool, timesheet data, and resource utilization reports live entirely within Project Online. These will be inaccessible after retirement. Export them early.

Custom Fields & Views

Any custom enterprise fields, views, or business intelligence configurations you've built over the years will not transfer automatically to any successor product.

Microsoft's Recommended Path

Microsoft is steering customers toward Microsoft Planner (the new unified Planner that absorbed Project for the Web) and Microsoft Project Plan 3/5 desktop licenses.

However, there are significant gaps to be aware of:

No enterprise resource management — The new Planner lacks the resource pool, capacity planning, and timesheet capabilities that Project Online offered
No portfolio-level reporting — Cross-project rollup views and portfolio analytics aren't available at parity
Simplified scheduling — The new Planner uses a simpler task management model without critical path analysis, baseline comparisons, or advanced dependency types (SS, FF, SF)
No .mpp round-trip — You can't open a .mpp file in the new Planner and get the same fidelity

For organizations that used Project Online as a lightweight task tracker, the new Planner may suffice. For teams that relied on enterprise project management features — resource leveling, earned value analysis, governance workflows — you'll need to evaluate alternatives.

Alternatives Worth Considering

The retirement has created a surge of interest in Project Online alternatives. Here are the main categories:

Full-Featured PM Platforms

These aim to replace Project Online's enterprise capabilities including resource management, portfolio views, and governance:

Onplana — Purpose-built as a Project Online replacement with AI-powered planning, .mpp import, OData migration wizard, and familiar project scheduling concepts. Free tier available.
Smartsheet — Spreadsheet-oriented PM with resource management add-ons
Planview — Enterprise PPM for large organizations

Agile/Hybrid Tools

Better suited for teams that want to move away from waterfall scheduling:

Jira — Strong for software development teams
Monday.com — Visual project management with automations
Asana — Task management with portfolio features

Key Evaluation Criteria

When choosing a replacement, prioritize:

Data migration support — Can you import your .mpp files and Project Online data directly?
Scheduling fidelity — Does it support dependencies (all four types), critical path, and baselines?
Resource management — Enterprise resource pools, capacity planning, utilization tracking?
Governance workflows — Proposal pipelines, gate reviews, change control boards?
AI capabilities — Risk detection, intelligent plan generation, natural language task creation?

Your 5-Step Action Plan

Don't wait until September. Here's what to do now:

Step 1: Audit Your Current Usage (This Week)

Document every Project Online feature your organization actually uses. Common ones include:

Project schedules with dependencies
Resource assignments and capacity views
Timesheets and time tracking
Portfolio dashboards
Custom enterprise fields
Governance/demand management workflows

Step 2: Export Your Data (This Month)

Start exporting critical data now — don't wait for the deadline:

Download all project plans as .mpp files
Export resource pool data via OData feeds
Archive timesheet data to Excel/CSV
Screenshot or document any custom Power BI reports

Step 3: Evaluate Alternatives (Next 4 Weeks)

Trial 2-3 platforms with real project data. Key tests:

Import a .mpp file and verify task dependencies survive
Test resource assignment workflows
Evaluate the learning curve for your team
Check enterprise features (SSO, audit logs, permissions)

Step 4: Run a Pilot (Weeks 5-8)

Migrate one real project to your chosen platform. Have the team use it daily for a full sprint cycle. Gather feedback.

Step 5: Full Migration (Weeks 9-16)

Roll out to all projects with:

Phased migration by department or portfolio
Training sessions for project managers
Documented rollback plan (keep .mpp exports accessible)
Post-migration validation checklist

How Onplana Helps

Onplana was built specifically for teams migrating from Microsoft Project Online. Here's what makes the transition smooth:

One-click .mpp import — Upload your .mpp files and get a fully mapped Onplana project with tasks, dependencies, resources, and baselines preserved
OData migration wizard — Connect directly to your Project Online OData endpoint to bulk-import all projects, resources, and assignments
Familiar concepts — If you know Project Online, you'll feel at home: Gantt charts, critical path, four dependency types (FS/SS/FF/SF), baselines, resource leveling
AI-powered upgrade — Go beyond what Project Online offered with AI risk detection, intelligent plan generation, and natural language task creation
Free tier — Start migrating today at no cost. Upgrade when you're ready.

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Frequently Asked Questions

Can I still use the Project Online Desktop Client after retirement? The desktop client (Project Professional/Standard) for local .mpp files will continue to work. It's the online service — PWA, resource management, timesheets, portfolio views — that's being retired.

Will Microsoft extend the deadline? Microsoft has not indicated any plans to extend. The October 2025 cutoff for new subscriptions suggests the timeline is firm.

What about Project for the Web / new Planner? Microsoft positions this as the successor, but it lacks enterprise features like resource pools, advanced scheduling, and governance. It's suitable for simpler project tracking.

Is my data safe after September 2026? SharePoint project sites persist, but PWA data (schedules, resources, timesheets) becomes inaccessible. Export everything before the deadline.

Last updated: April 2026. Need help planning your migration? Talk to our team or start free.