Still Running Windows 10? What Central Florida Businesses Need to Do Now

Microsoft ended free security updates for Windows 10 in October 2025. The computers did not stop working that day, so a lot of business owners shrugged and moved on. That is exactly the problem. A Windows 10 machine still boots, still opens email, still runs your accounting software, and still looks completely normal. What it no longer does is receive the monthly patches that close newly discovered security holes. Every month that passes, the list of known, unpatched ways into that machine gets a little longer.

We see this in the field constantly. At Think Tech Support, we help businesses across Orlando, Lake County, Clermont, Mount Dora, Eustis, Tavares, and Apopka sort out aging computers, and the single most common thing we find is a front-desk PC or a back-office workstation quietly running an operating system that stopped getting protection months ago. Here is how to figure out where you stand and what your realistic options are.

1. Find Out What You Actually Have

Most small offices do not have an accurate list of their computers. Machines get bought one at a time, inherited from a departing employee, or moved between desks. Before you can plan anything, you need a simple inventory: every computer, its operating system version, its age, and who uses it. On any Windows PC you can check this in seconds by pressing the Windows key, typing winver, and pressing Enter. Write down what each machine reports. You will very likely find at least one surprise.

2. Understand What “No More Updates” Really Costs You

An unpatched operating system is the single easiest way into a small business network. Attackers do not need to invent anything clever. They use published vulnerabilities that will never be fixed on your machine. Once one PC on your network is compromised, everything reachable from it is at risk, including shared folders, connected backups, and other computers. This is the most common starting point for the ransomware cases we get called about. If you want the fuller picture, our guide to ransomware protection for Central Florida small business walks through how these attacks actually unfold.

3. Check Whether Your Hardware Can Upgrade

Windows 11 has stricter hardware requirements than any previous upgrade, mainly a security chip called TPM 2.0 and a supported processor. Some machines from roughly 2018 onward will upgrade cleanly and for free. Older ones will not, no matter how well they still run. Microsoft provides a PC Health Check tool that gives you a yes or no, but the honest answer for a business is usually more nuanced: can it upgrade and should it are two different questions. A ten year old computer that technically qualifies is still a ten year old computer.

4. Weigh Upgrading Against Replacing

For eligible machines with decent specs, upgrading in place is quick, free, and preserves your setup. For anything slow, out of warranty, or running a mechanical hard drive, replacement almost always wins on total cost. Staff time lost to a sluggish computer adds up faster than owners expect, and a modern business-class desktop with a solid state drive is not expensive. We break the math down in our post on whether to repair or replace business computers.

5. Do Not Forget the Software Riding Along

An operating system change is a good moment to audit everything else. Old versions of Office, an accounting package the vendor no longer supports, a scanner with no Windows 11 driver: these are the things that turn a smooth upgrade into a bad Monday. Call your critical software vendors first and confirm compatibility before you touch a single machine. If a key application genuinely cannot move forward, that is worth knowing now, while you still have time to plan around it.

6. Stage the Rollout Instead of Doing It All at Once

Never upgrade every computer in the office on the same afternoon. Pick one non-critical machine, upgrade it, and let someone use it for a week. Real problems surface during real work, not during testing. Once that machine is clean, move through the rest in small batches. And back everything up before you start. A verified backup turns a failed upgrade from a disaster into an inconvenience, which is the whole point of the 3-2-1 backup rule.

7. Isolate Anything You Truly Cannot Replace

Sometimes a machine has to stay behind. A piece of shop equipment, a specialty controller, or a legacy system with no modern replacement. That happens, and it is manageable, but only if you treat that computer as untrusted. Take it off the internet, put it on a separate network segment, restrict what it can reach, and never use it for email or web browsing. An isolated old machine is a contained risk. An old machine sitting on your main network is an open door.

The Bottom Line

Windows 10 machines are not going to fail dramatically or announce themselves. They will just keep working while quietly getting less safe every month, which is precisely why this keeps getting pushed down the list. Take an hour, inventory your computers, and find out how many are still on it. Then upgrade what can be upgraded, replace what cannot, and isolate the handful that have to stay. It is a very manageable project when you plan it, and a genuinely expensive one when a breach forces your hand.

Not sure which of your computers are still running Windows 10? Think Tech Support audits, upgrades, and replaces business workstations for companies across Central Florida. Call us at (423) 486-6711 or reach out through our contact page for a free quote.