The quickest way to check your Windows version

The fastest method is to right-click the Windows Start button (the four squares in the bottom left corner) and select System from the menu that appears. A window opens showing your Windows version near the top — it will say Windows 10, Windows 11, or Windows 7, depending on what you have.

If that menu does not appear when you right-click, you can also press the Windows key and the letter R at the same time, type winver into the box that opens, and press Enter. A window labeled "About Windows" will show your version number.

Both methods take about 10 seconds and require no downloads or restarts.

Key Takeaways

  • Right-click the Windows Start button and select System to see your version in seconds.
  • Windows 10 and Windows 11 are the current versions most people use; Windows 7 is older and no longer receives security updates.
  • The version number appears in the same window where you can see how much storage space you have left.
  • Knowing your version matters because some programs only run on certain Windows versions, and security updates stop at different times for each version.

Why you need to know your Windows version

Different versions of Windows work differently. A program you want to install might require Windows 10 or newer, or it might only work on Windows 7. Your version also determines when Microsoft stops sending you security updates — Windows 7 stopped receiving updates in January 2020, so if you still use it, your computer is more vulnerable to viruses and hackers.

Your version also affects which troubleshooting steps will work when something goes wrong. If you call technical support or search online for help, the first question is usually "What version of Windows do you have?" because the answer changes the solution.

Understanding the difference between version and build number

When you open the System window, you will see two numbers. The version is the main one — Windows 10 or Windows 11. Below it is a build number, which looks like a long string of digits (for example, 22621.1413). The build number is a smaller update within your version and usually does not matter unless a technician asks for it specifically.

Think of it like a car: the version is whether you have a 2020 Honda Civic or a 2023 Honda Civic. The build number is which specific production batch it came from. For most purposes, you only need to know the version.

Where to find your version if the quick method does not work

If right-clicking the Start button does not show a System option, your computer may have an older setup. Instead, open the Start menu, type Settings, and click the Settings app. Then click System on the left side, and scroll down until you see "About" near the bottom. Click it, and your version will appear under "Edition."

On very old computers running Windows 7, you can right-click My Computer or This PC on the desktop, select Properties, and look for the version near the top of the window that opens.

What to do once you know your version

Once you have your version number, you can check whether a program you want to install will work on your computer. Most software websites list their system requirements, which tell you the minimum Windows version needed. If your version is older than what the program needs, you will not be able to install it.

You can also check whether your version is still receiving updates. Windows 10 receives updates until October 2025. Windows 11 receives updates until October 2031. If you use Windows 7, 8, or an older version, Microsoft no longer sends security patches, which means your computer is at higher risk. In that case, you may want to consider upgrading to a newer version.

Checking your version on a work or school computer

If your computer is managed by your employer or school, the System window may show additional information like a device name or domain. This is normal and does not change how you read your version number. The version still appears in the same place and means the same thing.

If you cannot access the System window because of security restrictions, ask your IT department or help desk. They manage what you can see on a work computer and can tell you the version directly.

Frequently Asked Questions

What is the difference between Windows 10 and Windows 11?

Windows 11 is newer and has a different look, with a centered Start menu instead of a left-aligned one. Windows 11 also requires newer hardware in some cases. Both work similarly for everyday tasks like browsing the web and using email. If you have Windows 10, you do not need to upgrade unless you want the newer design or your computer supports Windows 11.

Can I upgrade from Windows 10 to Windows 11?

Many computers can upgrade, but not all. Windows 11 requires specific hardware features that older computers do not have. The easiest way to check is to read the PC Health Check tool from Microsoft's website — it will tell you whether your computer meets the requirements. If it does not, you can stay on Windows 10 until that version stops receiving updates in 2025.

Is Windows 7 still safe to use?

Windows 7 no longer receives security updates, which means new viruses and hacking methods are not patched. If you use it, your computer is at higher risk, especially if you browse the internet or use email. If possible, upgrade to Windows 10 or 11. If you cannot upgrade, use antivirus software and avoid visiting untrusted websites.

Why does my version number have so many digits?

The long number is your build number, not your version. Your version is the straightforward part — Windows 10 or Windows 11. The build number tracks smaller updates within that version. You only need to remember the version number for most purposes.