Comments on: How to upgrade Windows 7 Enterprise to Windows 7 Ultimate

By: Windows 7 Key

Windows 7 Key — Sat, 05 Mar 2011 06:45:00 +0000

All versions of Windows 7 requires product activation. Windows 7 Enterprise can only be activated with a Volume License Key KMS or MAK if not active against a local KMS server. VL Enterprise requires a KMS / MAK activation box or against a local KMS server. Can be reset to 3 times.Windows 7 Ultimate Edition conventionally active on the Internet to the Microsoft activation servers.

By: Bill Sonia

Bill Sonia — Sun, 06 Jun 2010 00:13:25 +0000

A little extra step I needed to do before this would work was completely uninstall any virus protection. I tried to kill the process but I needed to uninstall it completely and reboot (making sure I changed back to Enterprise and Windows 7 Enterprise in the registry before reboot). Finally figured that out after 25 tries.

I had Windows Essentials and Comodo and unistalled both.

By: josephephi

josephephi — Sat, 15 May 2010 00:51:31 +0000

Step1:
You may have to uninstall certain programs for the upgrade to work.
You will not know what these are until the upgrade does the

compatibility check in step 4 below. In my case I had to uninstall the

following:

Uninstall Lexmark Series Printer
Uninstall Microsoft Virtual PC 2007 SP1
Reboot!

If you get a message in step 4 requiring uninstalls, make sure you undo

the changes in step 3, uninstall the offending programs and then

reboot.

Step2:
Shut down Webroot and all programs

Step3:
Go to, Start, Run: and type: regedit.exe
Go to HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersion
Change the key : ProductName from "Windows 7 Enterprise” to “Windows

Vista 7 Business”
Change the key: EditionID from "Enterprise" to “Business”
Do not restart

Step4:
Browse Windows 7 Ultimate DVD for setup.exe
Right click on properties
Select Compatibility tab and make compatible with Windows Vista SP2
Double click on setup.exe and do the internet updates.
Select upgrade to ultimate only.

By: absolutetech

absolutetech — Tue, 29 Dec 2009 04:08:21 +0000

Bravo to jacquesflamant, compat mode successfully enables fix on x64 enterprise to x64 ultimate!

By: jacquesflamant

jacquesflamant — Sat, 31 Oct 2009 22:44:04 +0000

Alright here how it worked for me :

Do the trick as mentionned above, but don't launch or auto-launch the setup, first explore the DVD folder, right clic on "Setup.exe", and go to the compatibility tab :
Make it compatible with Windows Vista SP2.

HTH

By: jacquesflamant

jacquesflamant — Sat, 31 Oct 2009 20:33:12 +0000

Didn't work here. Are you sure it's “Windows Vista 7 Business” (not “Windows 7 Business” only ?).

I also tried the cversion.ini hack, with no luck. Any other ideas ? And yes, I'm trying to upgrade my Enterprise 7 x64 to Ultimate 7 x64 if you doubt it.

By: kamlesh2011

kamlesh2011 — Sat, 31 Oct 2009 12:21:01 +0000

Very good. Working fine.

By: lxmanh

lxmanh — Tue, 22 Sep 2009 09:37:29 +0000

I was same problem!!! Not working.
…. T.T

By: brettmonten

brettmonten — Sun, 06 Sep 2009 22:43:07 +0000

I've struck a snag with this reverse upgrade – something hasn't been done. Although I'm Enterprise for all intents and purposes, I'm now being told that Windows can't be activated cos the KMS host can't be activated. That's an Ultimate thing isn't it?
Any clues?

thx

By: brettmonten

brettmonten — Sun, 06 Sep 2009 22:40:10 +0000

Did you try custom or standard? I just used the standard and left it to do its thang.