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Windows 10 Product Key: What Is It and How to Find It on Your Computer?

Daisy Raines

Aug 15, 2025 • Filed to: Device Data Management • Proven solutions

When setting up or reinstalling Windows OS, a small but vital detail causes confusion. That is the Windows 10 product key and its role in this whole operation. While it may sound complex, this key is simply a unique code that proves the copy of the OS is genuine. Without it, you can face limitations or even lose access to a lot of core updates.

Many users are unsure where to find this key or whether it is even needed. That is because modern computers often come with Windows pre-installed, and the product key isn't always visible. Therefore, this guide will walk you through everything in simple language to make things easier. You'll also learn what a Windows 10 product key actually is and how to find it on your computer using safe methods.

windows 10 product key

Part 1. What Is a Windows 10 Product Key & Can You Use a Computer Without It?

Before diving into how to locate it, understanding it a bit more is vital. That’ll help you figure out if your computer can run without it. At its simplest, a Windows 10 key is a 25-character code used to activate a copy of Windows OS. This activation simply lets Microsoft know that your version is the real deal, not a fake. You will find it in this sort of format: “XXXXX-XXXXX-XXXXX-XXXXX-XXXXX.”

define windows 10 product keys

Now, what if you skip entering the product key? Windows 10 still works without it, at least for a while. Most features will function normally, but a watermark on the screen will appear to remind you of the OS activation. You will also be unable to personalize your desktop fully, and some updates may be restricted over time. While it’s possible to continue without the key, activating Windows ensures full access.

Part 2. Is it Possible to get a New Windows 10 License Key?

The answer to the question can be complex, as you cannot buy a new license officially. Microsoft has stopped selling Windows 10 through its main store and partner platforms. The reason for this change is that the support for this OS will end in October 2025, meaning no more updates. That said, a lot of other marketplaces still do offer Windows 10 license keys.

Plus, you can also ask for a new key if you have already purchased a copy but have lost it. Furthermore, some organizations or enterprise setups also maintain license inventories for internal use. However, for everyday users, the opportunity to obtain a brand-new Windows 10 key directly has effectively passed.

Part 3. Where to Find Windows 10 Pro Product Key on Your PC?

With a much better idea of this key, the next step is to figure out where to locate the one that might already be tied to your device. Described in detail below are three simple and safe ways to check the Windows 10 product key in a matter of seconds:

Way 1. Use Command Prompt

A really quick way to check if the Windows 10 Pro product key is still accessible is through the native CMD tool. It doesn’t require any downloads and works instantly while being fully safe to use. Although this method doesn’t always show the full key in every case, it’s a good first step. Utilize the following steps to know the product key of the OS currently running on your PC:

Step 1. Look for the “cmd” in the Windows search bar on your computer and select “Run as administrator” from the results. Once Command Prompt has launched with admin privileges, run the following command to proceed:

Wmic path softwarelicensingservice get OA3xOriginalProductKey

Step 2. Here, wait for the command execution to happen, and the Windows 10 product key will appear on the screen. That is only if it is stored in the system’s BIOS or firmware.

add prompt in command prompt administrator

Way 2. Employ Windows PowerShell

When the Command Prompt method doesn’t work for you, another native option you can try is PowerShell. This tool is like CMD in functionality, but slightly more advanced. Hence, it offers another possible way to check for your Windows 10 Pro key. While not guaranteed to show the key on every system, it’s still worth a try. For systems activated through firmware or a digital license, follow these steps:

Step 1. Begin by accessing the Windows Power menu via the “Win + X” keys. From the available choices, click the “Windows PowerShell (Admin)” to run this command line utility and enter the following command:

Powershell “(Get-WmiObject -query ‘select from SoftwareLicensingService’).OA3xOriginalProductKey”

Step 2. Following that, hit the “Enter” key to execute the entered instruction and let the system process it. The result will show the Windows 10 license key on the screen if the system has the key stored in the BIOS.

get key with powershell prompt

Way 3. Locate in the Windows Registry

Another handy but a bit complex approach to get your hands on the Windows product key is to look inside the Windows Registry. This part of the system stores important configuration data. In some cases, it includes a partially encrypted version of your OS product key. When opting for this technique, be very careful, as you can end up damaging core files. Utilize the following guide to get the product key:

Step 1. Get the Run function of your PC going via the “Win + R” keys and enter “regedit” to access the Windows Registry. Here, make your way to the “Software” section to access the “Microsoft” folder to proceed.

follow path in registry

Step 2. Within this folder, move to “Windows NT” and opt for the “CurrentVersion” option. On the following screen, locate the “BackupProductKeyDefault” file in the “SoftwareProtectionPlatform” folder.

access BackupProductKeyDefault in registry

Step 3. After finding this entry, double-click it to access the 25-digit product key. Lastly, store the targeted key somewhere else so you do not have to browse registry files again.

Part 4. Win 10 Pro Activation Key: How To Activate Your Windows 10

Finding the license key on the PC usually means the OS copy running is a fully valid one. When you cannot locate it using any of the given methods, a likely reason is that you are on an unofficial version. Here, you can get a proper Windows 10 software key and manually activate your OS copy to get full benefits and updates.

The process to do so is straightforward and doesn’t require any sort of advanced knowledge. The following are the steps to manually enter the activation key and complete the process using your system settings:

Step 1. Commence the task by utilizing the “Win + I” keys to access the Windows Settings and move to the “Update & Security” section. Following that, access the “Activation” tab from the left side and opt for the “Change Product Key” button.

change product key from activation settings

Step 2. It will open up an “Enter a Product Key” window where you need to enter the 25-digit sequence in the “product key” field. Following that, hit the “Next” button and utilize “Activate” to conclude this operation.

add product key and activate

Part 5. Can You Get Windows 10 Product Key Free? Some Available Free Keys

After learning how to locate and activate a product key, the next question many users ask is whether they can get it for free. It is easy to get tempted to use one of the many websites and forums that have working keys. This is particularly true when you are merely testing or reinstalling Windows in an older machine.

No, you cannot receive a lifetime Windows 10 product key free of charge, directly from Microsoft. However, there are temporary or generic keys and sites that publicly post for testing or non-commercial use. These free keys don't necessarily activate your system permanently, but can let you use the full feature for a while. The following are some sites that offer free license keys and some actual keys, for example:

  1. archive.org
  2. github.com
  3. pastebin.com
  4. Forums like Reddit r/GetComputerHelp
  5. Tech blogs and YouTube tutorial channels

Some Common Windows 10 Keys

  • Windows 10 Pro: VK7JG-NPHTM-C97JM-9MPGT-3V66T
  • Windows 10 Home: TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
  • Windows 10 Education: YNMGQ-8RYV3-4PGQ3-C8XTP-7CFBY
  • Windows 10 Enterprise: NPPR9-FWDCX-D2C8J-H872K-2YT43

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Conclusion

In short, it does not have to be complicated to find or control your Windows 10 product key. The process of getting it out of your PC and finally activating it is easy with the right guidance. While new keys are no longer sold, valid ones still exist.

Similarly, tools like Wondershare Dr.Fone make mobile device management just as effortless. Everything covered here should make you fully equipped to handle Windows 10.

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Daisy Raines

staff Editor

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