Windows 10 Pro must be activated either with a valid 25‑character product key or a digital license. The “wrong key code” message means the key currently stored on the device is not valid for activation.

To resolve this:

1. Check how Windows is supposed to be activated
   • Windows requires either:
     • A 25‑character product key: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX, or
     • A digital license linked to the device/Microsoft account.
   • Details on activation methods and where to find them are in Activate Windows.
2. Try a valid product key if available
   • If Windows 10 Pro was purchased (boxed, card, email, or online), locate the original key (card, email, or Microsoft Store order history) and enter it:
     • Select Start > Settings > Update & Security > Activation > Change product key, then enter the 25‑character key.
3. If the PC is pre‑owned
   • If the PC was bought used with Windows already installed, the seller may have reused the key on more PCs than allowed.
   • Ask the seller for the original Windows DVD and product key and try activating with that.
   • If these are not available, or activation still fails, a new product key or copy of Windows must be purchased.
4. If hardware was changed
   • Significant hardware changes (for example, motherboard replacement) can cause Windows to lose activation.
   • For Windows 10, adding a Microsoft account beforehand lets the Activation troubleshooter help reactivate after hardware changes. If that was not done and no product key is available, a new product key may be required.
5. If no valid key or license can be found
   • If the original product key or digital license cannot be recovered, activation cannot be completed with the current information. In that case, a new Windows 10 Pro product key or license must be purchased.

For detailed guidance on activation issues and error messages, see Why can't I activate Windows? and Get help with Windows activation errors.

References:

• Why can't I activate Windows?
• Activate Windows

For Windows 10 Pro, you can use the following KMS Client Product Key:

• W269N-WFGWX-YVC9B-4J6C9-T83GX

Make sure to use this key in accordance with Microsoft's licensing agreements, and ensure that it matches the edition of Windows you are installing.

References:

• KMS client activation and product keys

To activate Windows 10 Pro, a valid Windows product key or a digital license is required. The ID 00331-10000-00001-AA051 is not the product key and cannot be used for activation.

Use this path to activate:

1. Open Start > Settings > Update & Security > Activation.
2. Select Change product key.
3. Enter the 25-character Windows 10 Pro product key.

If Windows was previously upgraded for free from Windows 7 or Windows 8.1, or if Windows 10/11 Pro was purchased through the Microsoft Store app, activation may use a digital license instead of a product key.

Common places to check for the product key:

• The confirmation email from the Windows purchase
• The packaging that came with the device
• The Certificate of Authenticity (COA) sticker on the back or bottom of the device
• If Windows came preinstalled on the PC, the manufacturer may have the original licensing details

If the device had a major hardware change such as a motherboard replacement, reactivation may fail until the Activation troubleshooter is run from the Activation settings page.

If no valid product key can be found, Windows can be purchased from the Microsoft Store from the Activation page by selecting Go to Microsoft Store.

If the installed edition does not match the license, activation will also fail. For example, Windows 10 Pro requires a Windows 10 Pro key.

References:

• Why can't I activate Windows?
• Get help with Windows activation errors
• Find your Windows product key
• Activate Windows

Hello, my name is Jayshri Independent advisor, happy to help you with windows 10 pro activation.

please follow steps for activation.

Click the Start button and select the Settings gear icon.

Alternatively, press Win + I on your keyboard.

In the Settings window, click on Update & Security.

Select Activation from the left-hand menu.

If Windows 10 is not activated, you'll see an option to Change product key. Click on this.

Enter your Windows 10 Pro product key. You should have received this key when you purchased Windows 10 Pro or from a retailer.

After entering the key, click Next, then Activate.

Windows will verify the key and activate your copy if it's valid.

If you’re upgrading from Windows 10 Home to Pro, you’ll need a valid Windows 10 Pro key. If you're using a digital license or you’re reinstalling Windows, the activation should be automatic once you connect to the internet.

If you encounter any issues or need more help, let me know!

"If it's an upgrade, you can try to use the default Windows 10 Pro key: W269N - WFGWX - YVC9B - 4J6C9 - T83GX."

That given key is generic key for KMS activation. 

Generic key for Windows 10 Pro consumer version is VK7JG-NPHTM-C97JM-9MPGT-3V66T

https://www.tenforums.com/tutorials/95922-generic-product-keys-install-windows-10-editions.html