Usually, the message you get tells you to contact the Key Management Service if that’s possible. Users mention installing it but getting the error code 0xc004f074 instead of a successful activation. Windows 10 is the current version of the Microsoft Windows operating system. When do you receive Windows 10 activation error 0xc004f074? This happens when your PC still runs on the old Windows version and you have to upgrade it to the latest one. Method 5: Check the Windows Upgrade Source What Causes Windows Error Code 0xc004f074?
