Windows 10 Edition Upgrade (Professional to Enterprise)

Here is the most simple and feasible way to quickly upgrade Windows 10 from one edition of Windows 10 to another. (Professional to Enterprise)

Command line Upgrade

• If you are using SCCM/MDT just add the command line with your product key in the TS. Its as simple as it is ..
• changepk.exe /ProductKey 

Manual Method 

• Clicking on the Start menu or the Start screen, type 'Activation' and click on the Activation shortcut.
• Click Change product key
• Enter your product key
• Follow the on-screen instructions

 Edition Upgrade (Professional to Enterprise) 

Link for References:-  https://technet.microsoft.com/itpro/windows/deploy/windows-10-edition-upgrades