How to Find Your Windows Activation Key (5 Methods)

Your Windows product key is a 25-character code that activates your copy of Windows. If you need it for a reinstall, transfer, or troubleshooting, there are several ways to recover it — even if you never wrote it down.

This guide covers five methods to find your Windows 10 or Windows 11 product key, from a quick Command Prompt command to checking your Microsoft account.

Key Takeaways

• The fastest way to find your product key is the Command Prompt command wmic path softwareLicensingService get OA3xOriginalProductKey — this retrieves the OEM key stored in your UEFI firmware.
• If your PC uses a digital license (no key embedded), there’s no 25-character key to find. Your activation is linked to your Microsoft account and reactivates automatically on the same hardware.
• Retail keys from purchases are in your email receipt or product packaging. OEM keys are in the UEFI firmware or on a COA sticker.

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First: Check Your Activation Type

Before searching for a key, check whether you even need one.

1. Open Settings → System → Activation (Windows 11) or Settings → Update & Security → Activation (Windows 10).
2. Look at your activation status:
3. “Windows is activated with a digital license linked to your Microsoft account” — You have a digital license. No product key to find. Windows reactivates automatically on this hardware when you sign in with your Microsoft account.
4. “Windows is activated with a digital license” — Same, but not linked to a Microsoft account. Link it now for easier recovery later.
5. “Windows is activated with a product key” — You have a key. Use the methods below to find it.

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Method 1: Command Prompt (OEM Keys)

This retrieves the product key embedded in your UEFI/BIOS firmware — the key that came pre-installed with your PC.

1. Press Windows + S, type cmd, right-click Command Prompt, select Run as administrator.
2. Type this command and press Enter: wmic path softwareLicensingService get OA3xOriginalProductKey
3. Your 25-character product key displays on screen.

If the command returns blank: Your PC doesn’t have an OEM key in the firmware. This happens with custom-built PCs, virtual machines, or PCs that were activated with a retail key instead of an OEM key. Try the other methods below.

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Method 2: PowerShell (OEM Keys)

Same result as Method 1, but using PowerShell instead of Command Prompt.

1. Press Windows + S, type PowerShell, right-click, select Run as administrator.
2. Run this command: (Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey
3. The key displays in the terminal.

Tip: You can also use this one-liner in PowerShell to display the key more clearly:

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

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Method 3: Check Your Email

If you purchased a digital product key from a retailer, the key was delivered via email.

Search your inbox for: – “product key” – “license key” – “activation key” – The retailer’s name (e.g., “The Software City,” “Microsoft Store,” “Amazon”)

Common retailers that send keys by email: – The Software City — delivered within 15–45 minutes of purchase – Microsoft Store — in the order confirmation email – Amazon — in the “Your Games & Software Library” section – Newegg, Best Buy — in the order confirmation

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Method 4: Check Your Microsoft Account

If you bought Windows from the Microsoft Store, your purchase is tied to your Microsoft account.

1. Go to account.microsoft.com/devices and sign in.
2. Your registered devices appear with their activation status.
3. Click on a device to see details.

Important: Microsoft doesn’t display the full product key here — only the activation status and device name. However, signing in with this account on the same device triggers automatic digital license activation without needing the key.

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Method 5: Physical Locations

COA Sticker (Older PCs)

Windows 7 and Windows 8 PCs often have a Certificate of Authenticity (COA) sticker with the product key printed on it. Check: – Bottom of a laptop – Back or side of a desktop tower – Inside the battery compartment (older laptops) – On the power supply cover

Note: COA stickers are from the Windows 7/8 era. Modern PCs with Windows 10/11 use UEFI-embedded keys instead of stickers.

Retail Box Packaging

If you bought a physical copy, the product key is on a card inside the box. Check where you store old software boxes.

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What If You Can’t Find Your Key?

Situation	Solution
Digital license, same hardware	No key needed — sign in with Microsoft account, activation is automatic
Digital license, new hardware	Use Activation Troubleshooter (Settings → Activation → Troubleshoot)
OEM key, same hardware	Reinstall same edition — UEFI key activates automatically
Lost retail key, no email	Purchase a new key. Windows 10 Pro starts at $59.99, Windows 11 Pro at $99.99
Key found but won’t activate	Key may be for a different edition, or already in use. Contact seller for support

For full activation instructions, see our guides for Windows 10 and Windows 11.

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Frequently Asked Questions

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