New
#21
I believe entering a 10 PRO oem key at change product key should work assuming key is valid (putting aside perennial discussion over legality of using oem keys) . Unfortunately many are scams.
What will work I am confident is to create a dual boot pc with 10 PRO (in a vhd is a good way), activate that, creating a digital licence, and then enter generic key.
I used generic key on Home a few minutes ago, and the error message did not say you could not use a generic key but it could not verify pc would activate, so if pc had a digital licence.
I will test this by installing Home in a vhd on a vm which has PRO activated and see what happens then.