Convert MSDN Windows 7 Enterprise installation to Ultimate

Solution 1:

You should be able to get an activation key from MSDN for the Enterprise edition that works fine to activate your installation over the Internet without changing editions. I used a partner activation key with Win7 Enterprise and it worked fine. It should be the same for MSDN. In fact, I can generate a key in the MSDN subscriber downloads website also.

Solution 2:

there is no 'Anytime Upgrade' path from Windows 7 Enterprise to Ultimate.

however, there is the old 'Vista trick' that might work with Windows 7.

run regedit.exe

Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion

Change the key ProductName from "Windows Vista ™ Enterprise” to “Windows Vista ™ Business”

Change the key EditionID from "Enterprise" to “Business”

change Enterprise to Home Basic, Home Premium, Professional or Starter. any of these versions allow for 'Anytime Upgrade'.

backup the registry keys before making changes.