Windows 10 reaches end of support in October 2025, meaning Microsoft stops releasing security updates for it. That’s the clearest signal for small businesses still running Windows 10: it’s time to think seriously about the upgrade path to Windows 11.

Here’s what you need to know to make the decision without getting lost in Microsoft’s marketing.

What’s actually different in Windows 11

The honest answer: for most small business users, the day-to-day experience isn’t dramatically different. The Start menu moved to the center of the taskbar (you can move it back), the Settings app was redesigned, and the visual style is cleaner. Under the hood, there are improvements to performance and security.

The features most relevant to small businesses:

TPM 2.0 security chip requirement. Windows 11 requires a Trusted Platform Module (TPM) 2.0 chip, which is a hardware security component. Most computers manufactured after 2017 have this, but older machines may not, and this is why some existing business computers can’t run Windows 11.

Better integration with Microsoft Teams. Teams is built into Windows 11 rather than a separate download, with quick access from the taskbar. Useful if your team uses Teams regularly.

Improved virtual desktops. More usable than in Windows 10, helpful for knowledge workers who multitask across different contexts.

Security improvements. Windows 11 has stronger baseline security defaults — mandatory TPM, Secure Boot, and other security technologies that help protect against firmware attacks and malicious software.

For most office users doing standard work — email, Office apps, browser, business software — Windows 11 feels familiar within a day.

The hardware question

This is where small businesses run into problems. Windows 11 requires:

  • A compatible 64-bit processor (most Intel Core 8th gen and newer, AMD Ryzen 2000 series and newer)
  • 4GB RAM minimum (8GB recommended)
  • 64GB storage minimum
  • TPM 2.0 chip
  • UEFI firmware with Secure Boot capable

Microsoft provides a free PC Health Check app that tells you exactly whether a specific computer can upgrade. Download it from Microsoft’s site and run it on any machine you’re unsure about.

What to do with incompatible computers:

  • Computers that can’t upgrade to Windows 11 and are also approaching the end of their normal service life (5+ years old) are due for replacement anyway — the upgrade decision is the replacement decision.
  • Computers that can’t upgrade but are still otherwise functional (newer machine with an older processor) may need to be assessed individually. Extended Security Updates (ESU) for Windows 10 are available at a cost, buying additional time while you plan replacements.

Don’t rush to buy new hardware for machines that have 2-3 years of useful life remaining but don’t meet Windows 11 requirements. Extended Security Updates buy time to make those replacements on your normal hardware refresh cycle.

How to upgrade without disrupting your team

Step 1: Inventory your computers. List every computer in your business, its age, and whether it passes the PC Health Check. Categorize: compatible (can upgrade now), incompatible but newer (need to evaluate), incompatible and aging (replacement candidates).

Step 2: Back up before upgrading. Verify that each machine being upgraded is included in your backup system and that recent backups are confirmed good. Upgrades go well 99% of the time, but the 1% where something goes sideways is much less painful with a recent backup.

Step 3: Test on one machine first. Before rolling out to the whole team, upgrade one machine — ideally your own or a technically comfortable employee’s. Use it for 2 weeks. Confirm that all business software works, the printer still works, and any connected devices behave normally.

Step 4: Upgrade the rest in small batches. Upgrade 2-3 machines per week rather than everyone at once. This limits the blast radius if a problem appears, and gives you time to troubleshoot issues before the next batch.

Step 5: Communicate the change to your team. A quick 10-minute walkthrough of what changed in Windows 11 (mostly visual and navigational things) prevents a wave of “where did X go” questions. The Start menu move and the reorganized Settings are the two things that generate the most confusion.

Business software compatibility

The vast majority of business software runs on Windows 11 without changes. The exceptions are older legacy applications, particularly:

  • Older custom software built for Windows 7 or earlier
  • Some older industry-specific applications that haven’t been updated recently
  • Older peripherals with outdated drivers (old label printers, specialized hardware)

Before upgrading any machine, verify that your most critical business applications are listed as Windows 11 compatible on the vendor’s support pages. Most major software vendors (QuickBooks, Office, Adobe, Salesforce) have supported Windows 11 since launch.

The bottom line: if your computers meet the hardware requirements, upgrading to Windows 11 before the Windows 10 end-of-support deadline makes sense. If you have machines that don’t qualify, plan replacements for the oldest ones and consider Extended Security Updates for newer machines that happen to have incompatible processors. Either way, running Windows 10 with no security updates after October 2025 isn’t a defensible position for a business that handles customer data.