The quickest way to check your Windows version

Open the Settings app by pressing the Windows key and typing "Settings", then click the result. Go to System in the left menu, scroll down, and click About. Look for the line that says "Edition" — that's your Windows version. You'll see something like "Windows 11" or "Windows 10".

If you need the exact build number too (useful when troubleshooting), it's on the same page under "OS build". The build number tells you which specific update of your Windows version you're running.

Key Takeaways

  • Settings > System > About shows your Windows edition and build number in one place.
  • The "Edition" line tells you whether you have Windows 11, Windows 10, or an older version.
  • The "OS build" number shows which monthly update you're on, useful for checking if you're current.
  • You can also right-click "This PC" on your desktop and select Properties to see the same information.

Using the System Information tool for more detail

If Settings doesn't show you what you need, the System Information tool gives you a fuller picture. Press the Windows key, type "System Information", and open the result. The first screen shows your Windows version under "OS Name" and the build under "OS Version".

This tool is especially useful if you're trying to figure out whether you have a 32-bit or 64-bit version of Windows — look for "System Type" on the same page. Most modern laptops run 64-bit, but older machines sometimes run 32-bit, and the difference matters for software installation.

Checking from the Command Prompt or PowerShell

If you prefer typing commands, open Command Prompt or PowerShell (right-click the Start button and choose either one). Type systeminfo and press Enter. The output includes "OS Name" and "OS Version" — the same information as the System Information tool, but in text form.

This method is faster if you already have a command window open, or if you're troubleshooting with someone over the phone and need to read the exact text. Copy and paste the output into an email or chat if you need to share it.

Understanding what the version number means

Windows versions are named by year or number: Windows 11 is the current version (released in 2021), Windows 10 came before it, and older machines might run Windows 7 or Windows 8. The edition matters too — you might have Windows 11 Home, Windows 11 Pro, or Windows 11 Enterprise, and each has different features.

The build number (like 22621 or 19045) tells you which monthly update you're on. Microsoft releases updates regularly, and your build number changes each time you install one. If you're troubleshooting a problem, knowing your exact build helps determine whether a fix is already included in your current version.

Why you might need to know your Windows version

Software often requires a minimum Windows version to run. When you download a program, the installer checks your version and refuses to install if you're too far behind. Knowing your version ahead of time lets you decide whether to update Windows or find an older version of the software.

Security updates also depend on your version — Microsoft stops releasing updates for very old versions of Windows, so checking your version tells you whether you're still getting security patches. If you're running Windows 7 or older, you're no longer receiving updates and should consider upgrading.

Updating Windows if you're behind

If you find you're running an old version, go to Settings > Update & Security > Windows Update and click "Check for updates". Windows downloads and installs updates automatically, though you may need to restart your laptop to finish the process.

Major version upgrades (like moving from Windows 10 to Windows 11) sometimes require manual action. If Windows Update doesn't offer the upgrade, you can visit the Microsoft website and download the upgrade tool, which guides you through the process. Back up your files before upgrading, just in case something goes wrong.

Frequently Asked Questions

What's the difference between Windows 10 and Windows 11?

Windows 11 is newer and has a redesigned interface, better performance on newer hardware, and improved security features. Windows 10 still receives updates but is older. If your laptop is several years old, it may not meet Windows 11's hardware requirements even if you want to upgrade.

Can I tell if my Windows is 32-bit or 64-bit from Settings?

Yes. Go to Settings > System > About and look for "System type". It will say either "64-bit operating system" or "32-bit operating system". Most modern laptops are 64-bit, which lets you use more memory and run newer software.

What does the OS build number mean?

The build number shows which monthly update you're on. A higher number means you're more current. If you're troubleshooting a problem, your build number helps determine whether a fix is already included in your version or if you need to update.

Why does my Windows version say "Home" or "Pro"?

Windows comes in different editions with different features. Home is the standard version for personal use. Pro includes extra features like remote desktop and encryption, and is often used for work. Enterprise is for large organizations. Your edition doesn't change how you check your version — it's just listed alongside it.

Do I need to update Windows if I find I'm behind?

If your version is still receiving updates from Microsoft, you can wait. If Microsoft has stopped supporting your version, updating is important for security. Check the Microsoft website to see the end date for your version — if it's passed, update soon.