Using Windows 10 home key on non activated 10 pro. Is it possible?

[odedginat]

Title. Is it possible? What would happen? For the record it's leggit. I want the home version, nothing more, but too lazy to re install.

 

[bignastyid]

No, a home key will not work on pro and there is no way to downgrade. You either have to buy a pro key or reinstall with the home version.

 

[USAFRet]

Title. Is it possible? What would happen? For the record it's leggit. I want the home version, nothing more, but too lazy to re install.

No, it is not possible.
A license key for Home will only activate a Home install.