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The safest way to check an Office key is through the application itself.

If it says "Windows is activated with a digital license," your system is genuine and linked to your hardware or Microsoft account.

Select and enter your code. The wizard will immediately verify its validity against Microsoft servers. 2. Windows System Settings

For Windows 10 and 11, you can check your current activation status directly: Go to .

A product key checker (often referred to as a ) is a tool that validates the status of Microsoft software licenses. These tools check your 25-digit code against Microsoft's databases or local configuration files to provide details such as: Validity Status: Is the key active, blocked, or expired?

Does the key correspond to Home, Professional, or Enterprise editions?

Is it a Retail (transferable), OEM (tied to hardware), or Volume (business) license? Official Ways to Verify Your Key