Exchange 2016-2019 EOL Website Page Banner

Microsoft Exchange 2016 & 2019 Reaching End of Support – October 2025!!

If your business relies on Microsoft Exchange 2016 or 2019, it’s time to take action: in October 2025, both versions will officially reach the end of their support lifecycle.

This means no more security updates, no technical support, and a far greater risk of downtime, cyber threats, and compatibility issues. Without timely action, your organisation could face significant operational disruptions and security vulnerabilities. Read on to find out what steps to take based on your current environment!

Before discussing solutions, it’s crucial to understand your current setup. Where organisations are not fully cloud, we commonly encounter two other types of Exchange environments:

Fully On-Premises Exchange

Organisations using Exchange 2016 or 2019 exclusively on-premises manage their entire email infrastructure in-house. This setup provides complete control over all aspects of the email system, from hardware to security, allowing for extensive customisation but also requiring significant resources for maintenance, upgrades, and scaling.

Hybrid Exchange

Hybrid environments combine on-premises Exchange with Exchange Online, offering a flexible solution that bridges local and cloud-based services. This configuration allows organisations to gradually migrate to the cloud while maintaining some on-premises control, but it also introduces complexity in areas such as identity management, email routing, and licensing.

Understanding these environments is crucial for determining the best path forward as Exchange 2016 and 2019 reach end of support. Each setup presents unique challenges and opportunities in the migration or upgrade process.

Our Recommended Solutions

For Organisations Unable to Fully Migrate

We understand that full cloud migration isn’t feasible for every organisation. In such cases, we recommend:

Upgrading to Exchange Server Subscription Edition. This new offering from Microsoft provides:

Continuous Updates
and Support

Enhanced Security
Features

Compatibility with Existing Exchange Deployments

Purchase Necessary Licenses: We’ll help you navigate Microsoft’s licensing options to ensure you have the appropriate coverage.

For Hybrid Exchange Environments

If you’re currently operating in a hybrid environment, Quorum recommends the following steps:

Migrate to New Exchange Management Tools. This is a crucial first step in modernising your Exchange infrastructure.

Full Migration to Exchange Online. We recommend moving all remaining mailboxes to Exchange Online. This approach:

Eliminates The Need For
On-Premises Exchange Servers

Provides Access to the Latest Features and Security Updates

Reduces Infrastructure Costs and Management Overhead

Resolve On-Premises Dependencies: Our team will work with you to identify and resolve any dependencies on your on-premises Exchange, ensuring a smooth transition.

Why Choose Quorum?

As specialists in Microsoft Exchange, Quorum brings a wealth of expertise to your migration project. Our team’s extensive experience with both hybrid and on-premises infrastructure allows us to develop tailored migration strategies that fit your specific infrastructure and needs.

We begin with a comprehensive assessment of your current environment to identify the optimal path forward. Throughout the transition, our proven methodologies ensure minimal disruption and maintain business continuity. From initial planning to post-migration optimisation, Quorum provides ongoing support at every step of your Exchange evolution.

Don’t wait until the last minute to secure your organisation’s email infrastructure. The complexity of Exchange environments, especially hybrid setups, requires careful planning and execution.