Windows 10 End of Support One Year Later: What Businesses Should Do Now

Microsoft ended regular support for Windows 10 on October 14, 2025. A year later, many business computers are still running it. Some organizations are paying for extended security updates, some are waiting for hardware refresh cycles, and some have simply not made a decision yet.

Each of those choices carries a different level of risk. Understanding what end of support actually means, and how long the bridge options last, helps a business move from drifting to deciding.

What End of Support Actually Changed

When a Windows version reaches end of support, Microsoft stops providing free security updates, feature updates, and technical support for it. The computers do not stop working, which is exactly why the deadline is so easy to ignore. The change is that newly discovered vulnerabilities no longer get fixed on a regular basis, so every month that passes widens the gap between what attackers know and what the system is protected against.

That gap matters most for devices connected to business data, email, and the internet. An unpatched operating system is one of the most common ways attackers get an initial foothold.

Extended Security Updates Are a Bridge, Not a Destination

Microsoft offers Extended Security Updates for organizations that cannot move immediately. These deliver critical and important security fixes only, with no new features and no general technical support. Business coverage is sold in annual increments, and according to Microsoft’s published schedule, the first year of coverage ends on October 13, 2026, with later years running through October 2027 and October 2028.

Consumer-oriented extension options have been handled separately and can differ from the business program, so organizations should confirm which program applies to them directly in Microsoft’s documentation. In every case, the extension buys time. It does not turn Windows 10 into a supported long-term platform, and the cost and effort of coverage tend to rise the longer a business relies on it.

The Real Risks of Staying on an Unsupported System

Security is the obvious concern, but it is not the only one. Auditors, regulators, and cyber insurance providers increasingly expect businesses to run supported software. Industries with strict requirements, such as healthcare and financial services, can find that unsupported systems create compliance findings that are difficult to justify.

Compatibility is another quiet risk. Software providers gradually stop testing new releases on older operating systems, so applications, drivers, and security tools may begin to behave unpredictably or lose support entirely. Businesses that wait for something to break often end up forced into a rushed migration at the worst possible time.

Start With a Complete Inventory

Most migration problems begin with an incomplete picture. Before choosing a plan, a business needs to know exactly which devices are still running Windows 10, who uses them, and what they are used for.

The list should include the less obvious machines: reception and conference room computers, shared workstations, kiosks, lab or equipment-connected PCs, and older laptops that employees rarely bring to the office. A single forgotten device that is never upgraded can become the weakest point in an otherwise protected environment.

Check Which Devices Can Actually Move to Windows 11

Windows 11 has stricter hardware requirements than Windows 10, including a supported processor and a security chip known as TPM 2.0. Many computers purchased in recent years meet these requirements, while older ones do not and will need to be replaced.

Sorting the inventory into devices that can upgrade in place and devices that need replacement gives the business a realistic scope and budget. It also helps align the migration with hardware that was already due for a refresh, rather than treating the deadline as a separate expense.

Plan the Migration in Waves and Test Critical Applications

A phased approach reduces disruption. Many organizations begin with a small pilot group, resolve any issues, and then move department by department. Business-critical applications, particularly specialized or older software, should be tested on Windows 11 before wide rollout so that problems are found in a controlled setting.

Communication matters as much as the technical work. Employees who know when their computer will change, what will look different, and where to get help tend to adapt quickly, while surprises create unnecessary support requests.

Reduce Risk on Devices That Cannot Move Yet

Some machines will take longer to migrate, whether because of hardware lead times or application dependencies. For those, compensating controls reduce exposure. Enrolling eligible devices in extended updates, keeping endpoint protection current, limiting administrator rights, requiring multi-factor authentication for accounts used on those devices, and restricting what they can reach on the network all make exploitation harder.

These measures are a temporary safeguard, not a substitute for migration, and they work best when the remaining Windows 10 devices have a documented end date.

How Mindcore Technologies Helps Businesses Plan the Move

Mindcore Technologies has spent more than 30 years helping businesses manage technology transitions without disrupting daily operations. Under the leadership of Matt Rosenthal, CEO of Mindcore Technologies, the company delivers IT services in Gainesville, FL that include device inventory, Windows 11 readiness assessments, phased migration planning, and ongoing patch management. As a Microsoft Partner, Mindcore also supports Microsoft 365 and endpoint security alongside the operating system move.

Businesses working with Mindcore get a clear list of what needs to change, a realistic timeline, and protective controls on the devices that cannot move right away.

Conclusion

Windows 10 end of support is not a single moment that passes and is forgotten. It is an ongoing exposure that grows for every device left behind. Taking inventory, checking Windows 11 eligibility, testing key applications, and migrating in planned waves give a business a controlled path forward, while extended updates and compensating controls cover the gap in the meantime. The businesses that treat this as a project with a date, rather than a problem to avoid, are the ones that finish with the least disruption.

About the Writer

Matt Rosenthal is the CEO and President of Mindcore Technologies, a full-service IT consulting and cybersecurity firm serving businesses across Florida, New Jersey, Maryland, South Carolina, Louisiana, Texas, and nationwide.

With more than 30 years of experience in IT leadership, managed services, and technology strategy, Matt has helped organizations across healthcare, financial services, and professional services plan and carry out operating system and infrastructure transitions. He holds an MBA in Technology Management, is a certified Project Management Professional (PMP), and is the host of Digging In, a weekly podcast on success in business, life, and health.

Ajit Yadav

Author Bio: Ajit yadav is a professional blogger and co-founder of WindowsClassroom. He is a software engineer by education and blogger & writer by profession.