2026 is shaping up to be a year of transition for Microsoft 365. Across the platform, a range of features and products are being retired, replaced or re-imagined — and the impacts are real for organisations of all sizes. From legacy tools being phased out to newer systems taking their place, these changes aren’t just technical bullet points. They affect how people work, how systems are configured and how IT teams must plan ahead.
For many businesses that don’t actively track Microsoft’s roadmap, these retirements can feel sudden — even when notifications and timelines have been published months in advance. That’s where proactive lifecycle management becomes essential.
Why this matters now
Software evolves, and feature retirements are a natural part of that lifecycle. However, when functionality that has quietly become embedded into daily workflows is deprecated, organisations can experience disruption unless they’ve planned ahead. MSPs and IT leaders need to help clients navigate these shifts to avoid downtime, data loss or degraded user experiences.
What’s being retired in 2026
Microsoft’s retirement schedule in 2026 spans a wide range of products and features across the Microsoft 365 suite — from collaboration tools to core services. Some notable changes include:
Project Online — After more than a decade of service, Project Online will formally retire on 30 September 2026. Once retired, projects and associated data will no longer be accessible unless organisations have transitioned to an alternative solution ahead of the deadline.
Legacy Microsoft 365 features — A range of older features across Teams, Planner and SharePoint are being retired throughout the year, particularly where they overlap with more modern replacements or cloud-native experiences.
Office Online Server — Support for on-site Office Online Server (which enables browser-based editing on premises) ends 31 December 2026, pushing organisations toward Microsoft 365’s cloud-based editing experiences or other alternatives.
SharePoint legacy compliance features — Earlier records management and information management policies are being removed, with organisations expected to adopt retention labels and modern compliance controls instead.
In addition, Microsoft has already retired older licensing variants such as the Power Apps per-app plan, pushing users toward newer licensing options.
These changes can impact not just feature availability but also data access, workflows, integrations and licence planning — particularly for organisations that haven’t revisited their Microsoft 365 setup in a while.
What IT teams need to do
The common theme across all these 2026 retirements is one thing: proactive planning prevents disruption.
Here’s a practical checklist for IT teams and MSPs:
- Understand what your organisation actually uses
Retirements matter only where people or processes depend on the features being removed. An inventory of usage is the essential starting point. - Map dependencies and workflows
Some tools — like Project Online — are deeply embedded in business processes. Evaluate how workflows need to change and where training or communication will be required. - Identify alternatives and transition paths
For each retirement, there’s typically a Microsoft-endorsed replacement or modern equivalent (e.g., Planner, Project Server Subscription Edition, cloud-native compliance tools). Choose the path that aligns to your operational and security needs. - Plan migrations and cutovers with adequate lead time
Many retirements have firm deadlines (like Project Online’s September 30 date). Migrating late often increases risk, costs and user frustration. - Re-evaluate licences and agreements
Retirements sometimes impact licensing plans too — especially older licence types or legacy plans. Reviewing licence allocations helps avoid unexpected costs or gaps in coverage. - Communicate with users early and often
Users don’t want surprises when tools change or disappear. Clear communication about timelines, impacts and new workflows reduces friction and builds confidence.
Why MSPs play a crucial role
Microsoft’s retirement calendar isn’t just about technology — it’s about change management. MSPs act as the “translation layer” between Microsoft’s roadmap and how those changes affect individual organisations’ operations.
This includes:
- Monitoring upcoming retirements on behalf of clients
- Evaluating what features are actually in use
- Advising on migration paths and alternatives
- Implementing changes before users are disrupted
- Communicating impacts and training plans to stakeholders
This proactive approach turns what could be a reactive scramble into a smooth transition — and minimises the risk of downtime or surprise issues when legacy features disappear.
Looking ahead
2026 is a pivotal year in Microsoft 365’s evolution. As the platform continues to prioritise cloud-first, security-first and AI-enabled experiences, older components are being phased out in favour of modern, supported alternatives.
For organisations and IT teams, that means staying informed, planning early and embracing change as an ongoing part of lifecycle management — not something that only gets attention when there’s a crisis.
If you haven’t reviewed your Microsoft 365 environment recently, now is the right time to start.
