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Windows 7: Upgrade Home Premium to Professional? (7)

17 Feb 2010   #1

Windows 7
Upgrade Home Premium to Professional? (7)

Hello everyone, I just received a copy of Windows 7 Professional via MSDNAA. I'd like to upgrade my computer which is running 7 Home Premium.

Is there any tweaks that I need to make, as every time I try to launch the Upgrade process via the downloaded Win7Pro disk, it tells me to use Anytime Upgrade. However, Anytime Upgrade says that it can't upgrade to that version of windows after I enter the key given to me by the MSDNAA (it validates fine).



(Copied from NBR)

My System SpecsSystem Spec
17 Feb 2010   #2


Unfortunately, MS wants you to use Anytime to Upgrade between Win7 versions. You are left to clean install if you have another retail version.

However, there is a workaround which is achieved by adapting this popular fix for changing between the Ultimate RC and any other version: Upgrade the Windows 7 RC to any retail version Icrontic Tech

The same principle applies: you carefully change the reg keys to trick installer into thinking you are upgrading over the same version, which is a Repair Install in Win7 and therefore allowed.

It has worked every time tried so far, for many different combinations Starter>Premium, Ultimate>Pro, Premium>Ultimate, etc. All users report good performance.
My System SpecsSystem Spec
18 Feb 2010   #3

Windows 7

Thank you very much for this!
it worked very well, took awhile, but it worked. I remember doing this to update between beta and RC versions of Windows 7. I just didn't think to apply this solution to the issue I was having. Thanks again for it
My System SpecsSystem Spec

18 Feb 2010   #4


You're welcome.

Glad it worked for you and thanks for reporting it back to us.
My System SpecsSystem Spec
09 Mar 2015   #5

Win 7 Ult 64, Win 8.1 Pro 64, Win 10 pre 64, MacOS
Worked to repair Home Premium with Pro

I was working on a computer that thought it was Win 7 Home Premium even though it was originally Win 7 Pro on the COA. Didn't realize that till after I completed a repair install of Home Premium. Went to put in the CD key and it rejected it. That's when I realized that the OS was reporting the wrong version. Changing the 2 registry entries noted in the link from Home Premium to Professional let me do a repair install of Professional and now all is right in the world.

Here's the important info: To start, crack open the registry and navigate to the HKLM\Software\Microsoft\Windows NT\Current Version folder. In the right-hand pane, there are two registry entries named EditionID and ProductName. Those are the ones to change.
My System SpecsSystem Spec
09 Mar 2015   #6

Win-7-Pro64bit 7-H-Prem-64bit

Kind of a difficult thing to miss
My System SpecsSystem Spec
09 Mar 2015   #7


If it had Home Premium instead of the licensed version on the COA then it was most likely installed at some point. I've never seen the OS report itself incorrectly. The question then becomes if the user reinstalled it with a HP Product Key that is now sitting unused, or if it had been cracked by either the owner or the ubiquitous "friend" bearing gifts.
My System SpecsSystem Spec

 Upgrade Home Premium to Professional? (7)

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