Microsoft Product Key Checker Upd -

Open Command Prompt as Administrator and run:

Maybe you bought a cheap key online. Maybe you found an old sticker on the bottom of a laptop. Or perhaps you’re trying to transfer a license to a new PC. microsoft product key checker

So how do legitimate users check their keys? You have three real options. This tells you what edition the key is for, not if it’s blocked by Microsoft. Open Command Prompt as Administrator and run: Maybe