Nice app, tried it immediatley and it revealed the product ID and key, however it failed to activate my windows, maybe it's the key to this trial installation.

Quote Originally Posted by Jun aka Pekto View Post
This works fine for me when it comes to finding out what my product keys are. I use both 32-bit and 64-bit. I just save a screenshot of the produkey window.

ProduKey - Recover lost product key (CD-Key) of Windows/MS-Office/SQL Server

I doubt you'll find the Windows 10 product key externally. Windows 10 is kind of different from previous Windows when it comes to activation and reinstallation. I think it's better now.