Validate Microsoft product keys — edition, channel & MAK remaining count
Supports Windows, Office, Visual Studio & Server keys (PKey2009 · Win8/Office2013+).
Edition detection uses Microsoft's official pkeyconfig database (Windows 8.1–11, Server 2016–2025, Office 2013–2024, Visual Studio 2019–2022). MAK remaining counts are queried live from Microsoft's activation service — only available for Volume MAK keys. Retail key usage status can only be confirmed by attempting activation on a device.