The quickest way to check your Windows version

The fastest method is to press the Windows key and the letter R at the same time, type winver, and press Enter. A window will open showing your Windows version number, your build number, and when your system was last updated. This works on every Windows computer and takes about five seconds.

If that keyboard shortcut does not work on your machine, you can reach the same information through Settings. Press the Windows key, type Settings, open it, then go to System on the left side and select About at the bottom. You will see the same version and build information displayed there.

Key Takeaways

  • Press Windows key + R, type winver, and press Enter to see your Windows version in seconds.
  • Your version number (like 22H2) and build number are two different things — the build number changes more often and tells you how current your updates are.
  • Windows 10 and Windows 11 are the two current versions; if you see Windows 7 or 8, your computer is no longer receiving security updates.
  • Knowing your version matters because some programs and hardware only work with specific Windows versions, and support for older versions eventually stops.

Understanding version numbers versus build numbers

When you open the version information window, you will see two numbers that look similar but mean different things. The version number (like 22H2 or 23H2) tells you which major release of Windows you have. The build number (a longer number like 19045.3930) tells you how many updates have been installed on top of that version.

Think of it this way: the version number is the year of your car model, and the build number is the service record. You might have Windows 11 version 23H2, but your build number shows you are on the latest patch released this month. If your build number is several months old, it means you have not installed recent security updates yet.

The build number matters more for security than the version number does. Microsoft releases small updates to the same version regularly, and those updates fix vulnerabilities. If your build number is significantly behind, you should run Windows Update to catch up.

What the version numbers actually mean

Windows versions are named after the year and half-year they were released. Version 22H2 means the second half of 2022. Version 23H2 means the second half of 2023. If you see 21H2, that is the second half of 2021. The letter H always means "half" — there is no H1 or H2 in the middle of the year, just the version number alone.

Currently, Windows 11 is the newest operating system, and Windows 10 is still widely used and still receiving updates. If your computer shows Windows 7, Windows 8, or Windows 8.1, those versions no longer receive security updates from Microsoft. That does not mean your computer stops working, but it means new vulnerabilities will not be patched, which creates a risk if you use the internet.

Where to find version information in Settings

If the winver command does not open on your machine, you can find the same information by opening Settings directly. Click the Windows Start button, type the word Settings, and open the Settings app. On the left side, click System, then scroll down and click About at the very bottom of the list.

The About page shows your version number under "Windows specifications" and your build number right below it. You will also see your device name, processor type, and how much RAM your computer has. This page is the same information as the winver window, just displayed in a different layout.

Why you might need to know your Windows version

Some software only runs on specific Windows versions. If you are trying to install a program and it says it requires Windows 11, a computer running Windows 10 will not be able to run it. The same applies in reverse — very old programs sometimes do not work on the newest Windows versions because the operating system no longer supports the way they were built.

Hardware like printers and graphics cards also have version requirements. When you read a driver (the software that lets Windows talk to your hardware), the manufacturer often provides separate downloads for Windows 10 and Windows 11. Downloading the wrong one will not work.

Knowing your version also matters for support. If you contact Microsoft support or a software company's support team, one of the first questions they ask is what Windows version you are running. Having that number ready saves time.

Checking for updates after you know your version

Once you know your version and build number, you can check whether your computer is up to date. Press the Windows key, type Update, and open Windows Update. Click "Check for updates" and let your computer search. If updates are available, Windows will read and install them automatically, though you may need to restart your computer afterward.

If your build number is more than a few months old, running Windows Update is worth doing. These updates include security patches that protect your computer from known vulnerabilities. After the update finishes, you can run winver again to see your new build number and confirm the update worked.

Frequently Asked Questions

What is the difference between Windows 10 and Windows 11?

Windows 11 is the newer version with a redesigned interface, different system requirements (it needs a specific processor type), and some new features. Windows 10 is still fully supported and will receive updates through October 2025. Both are current versions; Windows 11 is just newer.

If my build number is old, does that mean my computer is broken?

No. Your computer works fine, but it is missing security updates. Running Windows Update will bring your build number current and patch any known vulnerabilities. It usually takes 15 to 30 minutes depending on how many updates are waiting.

Can I upgrade from Windows 10 to Windows 11?

Not all computers can. Windows 11 requires a processor from Intel's 8th generation or newer, or AMD Ryzen 2000 series or newer. You can check your processor type on the About page in Settings. If your processor is older, you cannot upgrade, but Windows 10 will continue to work and receive updates.

What does "build" mean in the build number?

A build is a complete version of Windows that Microsoft creates and tests. Each time Microsoft releases a security update or bug fix, they create a new build with a new number. Your build number shows which build you currently have installed.

Is there a way to see version history on my computer?

Windows Update shows a list of recent updates you have installed. Press the Windows key, type Update history, and open "View update history." You will see the date each update was installed and what it fixed, though this does not show you every version you have ever had.