

If its automated I tried that via a number found through the command prompt using SLUI 4.


Upgrade Windows 10 Home to Windows 10 ProWhere do I find the regional activation center phone number. was your PC obtained from a reputable source? did you confirm your O/S was indeed Home before attempting the upgrade?Ĭ. You could also examine your existing installation more closely using Superfly's Showkeyplus (free) - just search for that.ī. Otherwise: here's a lengthy article on this- not all of the scenarios are relevant.įULL FIX: Error code 0xc004c003 in Windows 10, 7Īpart from retrying, which you probably have done, you can contact your MS regional activation centre by phone.
