If your business is still running Windows 10 in 2026, you are not alone. Many companies delayed device refreshes, software transitions, and operating system upgrades for practical reasons. But now that Windows 10 support has officially ended, staying on it carries more risk than ever.
For business owners, the issue is not just whether old PCs still turn on and work. The real question is whether those systems are still secure, supported, and suitable for daily operations.
Microsoft ended support for Windows 10 on October 14, 2025. That means standard Windows 10 systems no longer receive free security updates, bug fixes, or technical support from Microsoft. Microsoft also states that Windows 10 version 22H2 is the final version of Windows 10.
Why this matters for businesses
A computer does not suddenly stop working when support ends. That is what makes this transition easy to underestimate. Your staff may still be able to open email, use Office, access the internet, and run line-of-business apps. On the surface, everything may look fine.
The problem is what happens in the background.
Unsupported operating systems become harder to protect over time. Security vulnerabilities continue to be discovered, but unsupported systems stop receiving the normal stream of fixes that businesses rely on. That makes older machines more attractive targets and more difficult to defend properly in a modern business environment. Microsoft’s official guidance is clear that after Windows 10 end of support, it no longer provides software updates, security fixes, or technical assistance for standard Windows 10 PCs.
What about Microsoft 365 and Office?
This is another area where many businesses assume they have more time than they really do.
Microsoft says support for Microsoft 365 Apps on Windows 10 ended on October 14, 2025 along with Windows 10 support. However, to help organizations transition, Microsoft is continuing to provide security updates for Microsoft 365 Apps on Windows 10 through October 10, 2028. That is helpful, but it should be viewed as a temporary bridge, not a reason to postpone planning indefinitely. Microsoft also notes that Office 2016 and Office 2019 support ended on October 14, 2025.
The best path forward for most businesses
For most organizations, the right long-term move is straightforward: move eligible devices to Windows 11 and replace the ones that cannot meet the requirements.
Windows 11 has stricter hardware and security requirements than Windows 10. Microsoft lists key requirements such as TPM 2.0, Secure Boot capability, at least 4 GB of RAM, and 64 GB of storage. In many cases, the issue is not that a device is too old to function, but that it does not meet the security baseline Microsoft now expects.
This is why many businesses in 2026 are going through a mixed process:
- upgrading some existing PCs to Windows 11
- replacing older machines that are not eligible
- reviewing software compatibility before larger rollouts
- improving backup, patching, and endpoint protection policies at the same time
Can businesses stay on Windows 10 temporarily?
In some cases, yes. Microsoft offers an Extended Security Updates (ESU) path for Windows 10, and Microsoft’s documentation confirms that Windows 10 ESU updates are continuing into 2026 for eligible systems. But this should be treated as a short-term risk management option, not a permanent plan. ESU helps buy time while you complete migration work. It does not make an aging environment future-ready.
If a business has specialty software, legacy printers, accounting platforms, or industry-specific tools that require testing, ESU may be part of a sensible transition strategy. But the goal should still be a supported, modern environment.
What your business should do right now
The most practical next step is a simple audit.
Review which computers are still on Windows 10. Check whether they are eligible for Windows 11. Identify any systems tied to critical workflows such as accounting, point-of-sale, shared file access, printing, remote access, or specialty applications. Then build a phased transition plan based on business priority, not guesswork.
In many small and mid-sized businesses, this process reveals three groups:
- devices that can be upgraded now
- devices that should be replaced soon
- devices that need temporary special handling because of software or operational dependencies
Once you know which group each device belongs to, the project becomes much easier and much less disruptive.
Final thought
In 2026, staying on Windows 10 is no longer just a matter of preference. It is a business risk decision.
The good news is that this does not have to become a stressful, all-at-once project. With the right assessment and rollout plan, businesses can move forward in a controlled way, protect their data, reduce downtime, and avoid last-minute surprises.
At Technada, we help businesses review their current systems, identify upgrade-ready devices, and plan smooth transitions to more secure and supported environments. If your team is still using Windows 10, now is the right time to assess where you stand and decide on the best path forward.