When I try activating Win10 Pro, installed via OEI / OEM DVD, I get error 0xc004f050
Solution 1:
I dug this up after about half an hour of googling (quoting relevant bits below):
"Start button > left side, Settings > Update & Security > left side, click Activation > right side, click Change product key........
now enter the generic Win 10 Pro product key VK7JG-NPHTM-C97JM-9MPGT-3V66T > It will start switching your Home version to Pro version BUT it will NOT activate.
First, use the default Windows 10 Pro activation key...
VK7JG-NPHTM-C97JM-9MPGT-3V66T
Then you'll have a temporary Windows 10 Pro license. Now use your activation key off the package to get your permanent license.