End of Support for Microsoft Products: What You Need to Know

On October 14, 2025, Microsoft will officially end support for several of its widely-used products: Microsoft Office 2016, Office 2019, Exchange Server 2016, Exchange Server 2019, and Windows 10. For companies relying on these technologies, this means that Microsoft will no longer provide security updates, bug fixes, or technical support. While the software will continue to function, the lack of updates will leave systems vulnerable to security threats and operational inefficiencies. Therefore, the end-of-support marks a critical juncture for businesses to plan and execute their migration strategies to newer, supported versions or alternative solutions.

Risks of Continuing to Use Unsupported Microsoft Technologies

Continued use of technologies that reached their end of life poses significant risks. Without security updates, these systems become prime targets for cyberattacks, which can potentially lead to data breaches, financial losses, and reputational damage. Additionally, the absence of bug fixes can result in software malfunctions and compatibility issues with newer applications and systems. Companies may also face compliance challenges, as using unsupported software can violate industry regulations and standards, causing legal and financial penalties. Therefore, it is crucial for businesses to get timely access to supported technologies and maintain security, functionality, and compliance.

Recommended Migration Paths

To mitigate these risks, companies can consider the following migration paths for each technology:

• Office Versions 2016 and 2019. Upgrade to Microsoft 365, which offers the latest version of Office applications with continuous updates, enhanced security features, and cloud-based collaboration tools. For organizations that prefer on-premises solutions, upgrading to Office LTSC (Long Term Servicing Channel) 2024 is the most current available option.
• Exchange Server 2016 and 2019. Migrate to Exchange Online or Microsoft 365. Exchange Online provides robust security, scalability, and integration with other Microsoft 365 services. For organizations that prefer on-premises solutions, upgrading to Exchange Server Subscription Edition (SE) is recommended. This new version is planned to come out in the second half of 2025 and will have ongoing support and updates. If you have Exchange Server 2016, a legacy upgrade to Exchange 2019 is necessary as the first step because Exchange Server SE supports in-place upgrades only from Exchange 2019

Windows 10. Upgrade to Windows 11, which has improved security features, enhanced performance, and a modern user interface. Windows 11 is designed to support the latest hardware and software innovations, thus ensuring compatibility and future-proofing your IT infrastructure.

Partnering with Avenga for the Migration

Avenga is a leading digital technology partner with extensive experience in Microsoft technology and migrations. Our capabilities are built on:

• Expertise and Experience. Avenga’s team of certified experts in Microsoft technologies excel at smooth and efficient migrations. Our deep understanding of best practices helps businesses achieve their digital transformation goals.
• Tailored Solutions. Avenga provides customized migration strategies that align with each company’s unique needs and objectives. Our end-to-end services cover planning, execution, and post-migration support, which guarantee minimal disruption to business operations.
• Proven Success. We have successfully migrated thousands of users across various industries. Our approach includes detailed documentation, multilingual guidance, and Q&A sessions to address any concerns during the migration process.

We understand that technological migration is a complex journey that impacts various aspects of your business operations. When you partner with us, you gain a strategic technology ally committed to maximizing your operational efficiency. Your organization can confidently navigate the nuances of migrating to newer, supported technologies.

Your Next Strategic Move After the End of Support

October 14, 2025, the end-of-support date offers an opportunity to strengthen your tech capabilities. We’d be excited to facilitate the practical improvements this transition makes possible. We’re not just talking about technological upgrades but finding tangible ways to simplify your daily operations.

Let’s have a conversation about what this transition could mean for your organization: contact us.