Windows Server 2016 has been a reliable platform for organisations across the UK for nearly a decade.
However, with Microsoft’s extended support ending on 12 January 2027, businesses still relying on Windows Server 2016 need to start planning their next steps now.
After this date, Microsoft will no longer provide security updates, bug fixes or technical support, leaving organisations exposed to increasing security and compliance risks.
If you’re still running Windows Server 2016, here’s what End of Life (EOL) means for your business and what you should be doing next.
End of Life doesn’t mean your server suddenly stops working. However, it does mean Microsoft will stop releasing security patches and updates for newly discovered vulnerabilities. Over time, this creates significant risks for organisations handling sensitive data or operating critical business systems.
Unsupported infrastructure can lead to:
For many organisations, the biggest risk is simply doing nothing and assuming existing systems can continue operating safely.
While January 2027 may seem a long way off, server migrations are never simple projects and can be complex in nature. As many organisations have legacy applications, complex dependencies and business-critical workloads that require careful planning and testing, a migration can take time.
Waiting until the last minute can result in the existing server becoming exposed, while the migration takes place.
Starting now gives your organisation time to:
A proactive approach significantly reduces risk and disruption.
For many businesses, upgrading to Windows Server 2022 or Windows Server 2025 will be the most straightforward route.
Newer server platforms provide:
An upgrade also creates an opportunity to review your wider infrastructure and identify areas for optimisation.
Many organisations are using the Windows Server 2016 EOL deadline as an opportunity to accelerate cloud adoption.
Migrating workloads to Microsoft Azure can provide:
For businesses already using Microsoft 365, Azure often integrates seamlessly into existing environments.
Microsoft has announced Extended Security Updates (ESUs) for Windows Server 2016, providing organisations with additional security coverage after support ends. However, ESUs should be viewed as a temporary bridge rather than a permanent solution. They help buy time for complex migrations but do not replace the need to move to a supported platform.
If you’re currently running Windows Server 2016, the best next step is to carry out a comprehensive infrastructure assessment.
By identifying which servers, applications and workloads are affected, you can create a migration plan that aligns with your business goals, budget and operational requirements.
With Windows Server 2016 support ending in January 2027, organisations that act now will be in the strongest position to minimise risk, maintain compliance and modernise their IT infrastructure. The sooner you begin planning, the smoother your migration journey will be.
At Fifteen Group, our IT team are on hand to conduct an infrastructure assessment and help your business migrate to a new server efficiently and with minimum downtime.
Get in touch to find out more
