The fastest way to check your Windows version

Open the Settings app by pressing the Windows key and typing "Settings", then press Enter. Once Settings opens, select System from the left menu, then scroll down and click About. Look for the line that says Edition — this tells you whether you have Windows 11, Windows 10, or an older version. Below that, you'll see Version, which is a number like 23H2 or 22H2. That number tells you which update level you're on.

If you need the full technical details (called the "build number"), scroll down a bit further on the same About page. You'll see OS Build followed by a number. This is what technicians use when troubleshooting, but for most purposes, the Edition and Version numbers are what you need.

Key Takeaways

  • The Settings app's About section shows your Windows Edition (like Windows 11 or Windows 10) and Version number in under 30 seconds.
  • The Version number (like 23H2) tells you which update level you're running, which matters for compatibility and security patches.
  • The OS Build number is the full technical identifier that support staff may ask for when you contact them about a problem.
  • You can also check your version by right-clicking "This PC" on your desktop and selecting Properties, though Settings is faster.

Using the System Information window

If the Settings app doesn't open or you prefer the older method, you can use System Information instead. Press the Windows key, type "System Information", and press Enter. A window will open showing detailed information about your computer.

Look for the line labeled OS Name — this shows your Windows version. You'll also see System Type (which tells you if you're running 32-bit or 64-bit Windows), OS Build, and Version. All the same information is here, just in a different layout. This method works on every version of Windows 10 and Windows 11.

Checking from the desktop without opening Settings

Right-click on This PC (or My Computer on older systems) on your desktop. Select Properties from the menu. A window opens showing basic system information, including your Windows Edition at the top.

This method is slower than Settings because it shows less detail and requires more scrolling, but it works if you're already at your desktop and don't want to navigate through menus. The information you see here is the same as what appears in Settings — Edition, Version, and Build number are all present, just arranged differently.

Understanding what each number means

The Edition is the main product you own: Windows 11 Home, Windows 11 Pro, Windows 10 Home, or Windows 10 Pro. Home is the standard consumer version; Pro includes extra security and business features. If you see "Enterprise" or "Education", your computer is managed by a school or workplace.

The Version number (like 23H2, 22H2, or 21H2) tells you which major update you're running. Microsoft releases these roughly twice a year. The letter H means "half-year", so 23H2 means the second half of 2023. This matters because older versions eventually stop receiving security updates, usually about 18 months after release.

The OS Build is a longer number (like 22621.2715) that represents the exact patch level. This is what you give to support staff when troubleshooting, because it tells them exactly which fixes and updates you have installed. You don't need to memorize this number — just know where to find it if someone asks.

Why you might need to know your Windows version

Some software only runs on specific Windows versions. Before you download a program, the website usually lists which versions it supports. Knowing your version prevents you from downloading something that won't work on your machine.

Security updates also depend on your version. If you're running an old version that's no longer supported, you won't receive patches for new threats. Checking your version tells you whether you need to update Windows itself (not just individual programs) to stay protected.

Technical support staff ask for your version number because it helps them narrow down what might be wrong. A problem that happens on Windows 11 might not happen on Windows 10, or a bug might be fixed in version 23H2 but not 22H2. Giving them your exact version saves time.

Updating to a newer version if you're behind

If you find you're running an old version, you can update through Settings. Open Settings, go to System, then select Windows Update. Click Check for updates. Windows will download and install the latest version available for your Edition.

Updates usually take 20 to 60 minutes and require a restart. You'll see a notification when the update is ready to install, and you can choose when to restart. Don't force a restart in the middle of work — let it happen when you're done for the day, because unsaved work will be lost.

Frequently Asked Questions

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

Windows 11 is the newer version with a redesigned interface and some additional security features. Windows 10 still receives updates and will continue to do so until October 2025. If your computer is running Windows 10, you can update to Windows 11 through Windows Update, though some older computers may not meet the hardware requirements.

Why does my version number have letters and numbers like 23H2?

The number tells you which year and half of the year the update was released. 23H2 means the second half of 2023. Microsoft releases major updates twice yearly, so you'll see new version numbers roughly every six months. The OS Build number below it is more specific and changes with smaller patches.

Can I have Windows 11 Home and Windows 11 Pro at the same time?

No, your computer runs one Edition. You can upgrade from Home to Pro through Settings, but it requires a license key and costs money. Most people use Home, which has all the features needed for everyday use.

What if Settings won't open or my computer is too old to show this information?

Try System Information instead — press Windows key, type "System Information", and press Enter. If that doesn't work, right-click This PC and select Properties. If you're running Windows 7 or older, the layout is different but the information is in the same place. You may want to consider updating your operating system, as very old versions no longer receive security updates.

Do I need to update Windows if I'm running an older version?

Yes, if your version is more than 18 months old. Older versions stop receiving security patches, which means your computer becomes vulnerable to new threats. Check Windows Update in Settings to see if updates are available. Updates are free and automatic on most systems.