How to Check If Your Windows Copy Is Genuine: Step-by-Step Guide

Did you buy a used computer, or perhaps you reinstalled the operating system and aren't sure about the license status? The question is, whether Windows is genuinecomes up more often than you might think. The absence of a watermark in the corner of the screen indicates that the system is activated. In this guide, we’ll show you specific methods to verify the Windows activation status on your computer in just a few minutes. You’ll also learn what signs might indicate an illegal copy of the system and what to do if it turns out that your Windows needs to be activated.

Why You Should Verify Your System's License Status

Many users downplay the issue of software licensing until they encounter real problems. Meanwhile, checking the legitimacy of Windows is important for more than just formal reasons. A system that isn’t properly activated doesn’t receive full security updates, which exposes the data on your computer to hacker attacks and malware. Microsoft regularly releases patches to fix detected vulnerabilities, but these are only available to users with a valid license.

Another issue is functionality. Unactivated Windows occasionally displays an extremely annoying watermark in the lower-right corner of the screen, thereby preventing you from changing the wallpaper or the interface color. Although the system still works, using it becomes less comfortable. If you use your computer for work, seeing this during a presentation or video conference can make you look unprofessional.

How to check your Windows license through system settings

The simplest way to verify your license is to use the system's built-in settings. This method doesn't require knowledge of command-line commands or advanced technical expertise, so it's useful for every user. To check your Windows license, open the “Start” menu and click the gear icon to go to “Settings.” Then go to the “System” section and select “About” (in Windows 11) or “System Information” (in Windows 10). At the bottom of the window, you’ll find information about the system edition and activation status.

If you see the message “Windows is activated,” it means your copy has been successfully registered on Microsoft’s servers. You can also go directly to the “Activation” section in Settings, where you’ll find detailed information about the license type—whether it’s a digital license linked to your Microsoft account or a traditional product key.

Checking the authenticity of Windows via the command line

For those who prefer quick text-based methods, a command is available in the system console. Checking Windows authenticity This method takes just a few seconds and provides precise information about the activation status. Press the Windows + R key combination, type “cmd,” and press Enter. In the command prompt window, type the command “slmgr /xpr” and press Enter again. After a moment, a dialog box will appear with information about the license status.

The message "Your computer has been permanently activated" confirms that you have a valid perpetual license. For time-limited licenses, you will see an expiration date. If, however, the system displays a message indicating that the software is not activated, you will know that you need to enter a valid product key.

Pirated Windows – How to Spot the Warning Signs

Sometimes illegal Windows can be identified without running any commands. The operating system itself signals activation issues through characteristic signs. The most obvious symptom is the “Activate Windows” watermark in the lower-right corner of the desktop, which does not disappear even after restarting the computer. Another sign is locked personalization settings—the inability to change the wallpaper, accent colors, or lock screen. Regular notifications from the Action Center reminding you to activate the system also indicate a licensing issue. If the message “Your Windows license will expire soon” appears when you start your computer, this is another sign that you should check your system’s status.

You should also be aware of situations where a computer was purchased with the operating system already installed, but the seller did not provide any license documentation or a COA sticker. In such cases verifying the legitimacy of Windows using the methods described earlier will help resolve any doubts.

What causes activation issues?

An unactivated system does not mean it is pirated. Activation issues may result from replacing computer components, particularly the motherboard to which the OEM license is tied. Sometimes the cause is a Microsoft server error or an unstable internet connection during the verification process. It also happens that the product key has been used on too many devices, exceeding the limit of allowed activations.

What to do if your system requires activation

If, after verification, it turns out that your Windows does not have a valid license, you have several options. The simplest one is to purchase a genuine product key, which will allow you to use the operating system to its full extent. At the store Key-soft.pl you’ll find affordable Windows 10 keys and Windows 11 in various versions—from Home to Professional.

The process of activating your purchased key is simple. Just go to Settings, select the "Activation" section, and click "Change product key." After entering the 25-character code, the system will automatically connect to Microsoft's servers and verify the license. The entire process usually takes a few dozen seconds, and once it’s complete, the watermark will disappear and you’ll unlock all customization features.

Differences Between Windows License Types

When purchasing an activation key, it’s worth understanding the differences between the available license types. A Retail license is the most flexible option—you can transfer it between computers, as long as it’s active on only one device at a time. An OEM license is cheaper, but it is tied to the motherboard, which means that if you replace that component, you will lose the ability to use it on new hardware.

Our offerings Key-soft.pl also offers licenses linked to a Microsoft account, which make system reinstallation more convenient. After logging into your account, Windows automatically recognizes the purchased license and activates it without requiring you to re-enter the key. This is a convenient solution for people who regularly format their hard drive or switch computers. When choosing a specific option, it’s worth considering your needs:

• Retail (Online) – The license is not tied to a specific device and can be transferred between computers.

• OEM – associated with a Microsoft account or device, often used when purchasing new computers.

•  NonSLP – assigned to the motherboard; cannot be transferred to other hardware.

•  BOX – boxed license, allows you to change workstations and move the system.