On October 14, 2025, Microsoft officially ended support for Windows 10. If your business is still running it on even a handful of computers, this is not something to put off, and it is not just a nagging pop-up you can dismiss. It is a real and growing security gap. The good news: it is completely manageable once you understand your options.
What "end of support" actually means
Your Windows 10 computers still turn on and still work. That is exactly what makes this easy to ignore. But behind the scenes, a few important things have stopped:
- No more security updates. New vulnerabilities are found every month, and Windows 10 will no longer be patched against them.
- No more bug fixes. Problems that appear will simply stay broken.
- No official technical support. Microsoft will not help you with Windows 10 issues anymore.
- Software makers start dropping it too. Over time, browsers, accounting tools, and other apps stop supporting Windows 10.
Why this is a real risk for your business
An unpatched operating system is one of the easiest targets there is. Attackers actively hunt for machines running software that no longer gets security updates, because every newly discovered flaw stays open forever. For a business, the knock-on effects add up quickly:
- A bigger ransomware target. Unpatched systems are exactly how many attacks get their first foothold.
- Compliance trouble. If you handle health, payment, or client data, running unsupported software can put you out of compliance.
- Insurance headaches. Some cyber-insurance policies will not pay out if you were running unsupported systems.
- Growing incompatibility. Newer apps and devices will slowly stop working properly.
Your options, in plain terms
There is no one-size-fits-all answer, but almost every business lands on one of these:
- Upgrade eligible PCs to Windows 11. If your computers meet the requirements, this is usually free and the cleanest path.
- Replace older hardware. Machines that cannot run Windows 11 are often several years old anyway, and replacing them is a good moment to standardize.
- Buy Extended Security Updates (ESU) as a stopgap. Microsoft offers paid security updates for a limited time, useful if you need breathing room to plan properly.
- Move to cloud or hosted desktops. For some teams, shifting to cloud-based systems removes the hardware problem altogether.
How to know if your PCs can run Windows 11
Windows 11 has stricter hardware requirements than Windows 10, the most common sticking point being a security chip called TPM 2.0, along with a recent-enough processor. Some computers just need a setting switched on; others genuinely cannot make the jump. The only way to know for sure is to check each machine, which is quick to do across your whole fleet with the right tools.
What we recommend
Do not wait for something to go wrong. Start with a simple assessment: list every computer, check which ones can move to Windows 11, and flag the ones that need replacing. From there, a phased rollout, a few machines at a time, keeps your team working with no big disruption. Handled properly, the whole thing is calm, predictable, and often cheaper than businesses expect.
The bottom line
Windows 10 reaching end of support is not an emergency, but it is a deadline you have already passed, and every month on an unsupported system raises your risk a little more. Take stock of your computers now, make a plan, and move at a pace that suits your business. It is a routine upgrade when you get ahead of it, and a scramble when you do not.
Need a hand with this?
iSystems360 helps businesses plan and manage their IT the right way, with clear pricing and fast, friendly support.