Fix error 0xc03f6506 while upgrading from Windows 10 Home to Pro

Windows 10 Home comes preinstalled with many computers and most of the home users are offered Windows 10 Home but Windows 10 Pro has more features than Windows 10 Home. So users sometimes want to upgrade to Windows 10 Pro from Windows 10 Home and while doing so, they could encounter error code 0xc03f6506.

Fix error 0xc03f6506 while upgrading from Windows 10 Home to Pro

1. Using registry editor
If you have upgraded to Windows 10 Pro and you are getting this error code while the activation of Windows, you may fix this issue by making a small modification in Windows registry. Follow the steps given below:
> Press windows key + R to open RUN and type regedit and hit enter.
> After opening the registry editor, navigate to

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion

> Now look for a DWORD named EditionID. Double click on it and change its value to Windows 10 Professional.
> Now look for another DWORD named as ProductName. Double click on this as well and change its value to Windows 10 Professional.
> Now restart your computer and try activating the Windows, it should be activated now.

2. Using command prompt
For this method, you need to get a bootable USB flash drive. If you have a bootable flash drive for Windows 10, follow the steps below to upgrade your Windows 10 edition and activate it:
> Plug in the Windows 10 installation USB media.
> Now launch the command prompt with admin rights.
> Suppose your USB drive is assigned the letter H, then in command prompt, type H: and hit enter to select the H: drive.
> Now type this command and press enter:

setup.exe /auto upgrade /pkey <YOUR WINDOWS 10 PRO EDITION PRODUCT KEY>

> Your Windows edition would be changed now and if your key is genuine, it would be activated.

3. By disabling the Internet
If you are not able to upgrade to Windows 10 Pro from Windows 10 Home, just disconnect your computer from the internet and try upgrading the edition using your product key. It should be upgraded without any errors. Later on, you can activate it by connecting your PC to the internet.

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