How to Find Your Windows 10 Activation Key (And What to Do If You Need a New One)

Whether you're reinstalling Windows, replacing a hard drive, or just want to keep your license information on file, knowing how to find your Windows 10 activation key is useful. Here are the most reliable methods.

This is the quickest method for most users.

1. Press Windows + R, type cmd, and press Enter
2. In the Command Prompt window, type the following command and press Enter:

wmic path softwarelicensingservice get OA3xOriginalProductKey

If your key is stored in the system firmware (common on OEM computers), it will display here.

Note: This method works for OEM keys embedded in the BIOS/UEFI firmware. It may not display keys for retail or volume licenses.

1. Right-click the Start button and select Windows PowerShell (Admin)
2. Enter this command:

(Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey

Tools like ProduKey (NirSoft) or Belarc Advisor can retrieve your Windows product key along with other software licenses on your PC. These are free tools that are widely used by IT professionals.

• Retail box: The key is on a sticker inside the box or on a card
• Digital purchase from Microsoft: Check your Microsoft account order history
• OEM computer (Dell, HP, Lenovo, etc.): The key is typically embedded in the BIOS — use Method 1 or 2 above
• Volume license: Contact your IT administrator or check your Microsoft Volume Licensing Service Center account

If you've lost your Windows 10 key and can't retrieve it, you have options:

Microsoft Account linking: If your Windows 10 installation is linked to a Microsoft account, you can reactivate Windows after reinstalling by signing in with that account — no product key needed.

Purchase a new license: Microsoft sells Windows 10 licenses through their website and authorized resellers.

Upgrade to Windows 11: If your hardware is compatible, Windows 11 is available as a free upgrade for activated Windows 10 installations.

For businesses managing multiple Microsoft products, see our guide on choosing the right Microsoft 365 plan.

For businesses running multiple Windows computers, individual retail licenses can become difficult to manage. Microsoft 365 includes Windows licensing options through Microsoft 365 Business Premium — learn more about Google Workspace vs. Microsoft 365 to see which suite fits your business, which simplifies license management across your organization.

VSF Technology helps businesses in Tampa Bay and nationwide manage their Microsoft software licensing. Contact us if you need help with Windows licensing or Microsoft 365 setup.