Usually, you'd activate Windows 11 (or 10) using the Settings app to enter the product key. However, if you're in an enterprise environment and you have a specific type of activation key, you can ...

Fix Error 0xC004C003, 0xC004C003, The activation server determined the specified product key is blocked, on Windows 11/10, by following this guide.

Activation error 0xC004F078 on Windows 11/10 occurs when the computer is not able to contact the KMS Service online or if there is Key mismatch. Here is the ...

Easy guide to force activation of Windows 10 via command prompt.

Should you activate Windows? While it's completely safe to use Windows 10 or 11 without activating, I wouldn't suggest doing that because there are plenty of benefits to getting a licensed version.

Microsoft's official Windows activation methods involve either the customer entering a 25-character product key when prompted, or signing in with their Microsoft account to apply a digital license.