Windows 8 and 8.1 Forums


Inability to upgrade Windows 8 Basic to Windows 8 Pro (VL)

  1. #1


    Posts : 2
    Windows 8.1

    Inability to upgrade Windows 8 Basic to Windows 8 Pro (VL)


    Hey, folks!

    In our small office, we've made the decision to bring in a server.
    Right now, we have multiple PCs installed with Windows 8 and Windows 8.1, both basic OEM editions; and several others installed with Windows 7 Home Premium OEM.

    In order to insert them into the server's domain, I'm forced to upgrade them to their respective Professional editions, for which I've recently received a VLSC license.

    Now, I've been trying to use the MAK keys to upgrade my current OEM versions with no success. Attempting to "Add Features," using 'slui.exe' and 'slmgr.vbs' to install the new key all come back with an error that the keys can't be used.

    My question, as such, is whether it is even possible to upgrade Windows 8 Basic OEM to Windows 8 (or 8.1) Pro Volume License?

    Any help would be appreciated.

    Thanks in advance.

      My System SpecsSystem Spec

  2. #2


    Sydney, Nova Scotia, Canada
    Posts : 6,490
    Windows 10 Education 64 Bit


    Have a look here, Windows 8 and Windows 8.1 Upgrade Paths Maybe you can make more sense out of it than I can?

    EDIT: have you tried booting from the 8 Pro VL ISO and seeing if you get an upgrade option?

    2nd EDIT: I'm thinking for the add features option to work the files needed must already be present and they are not. If you boot from the actual install media it may then be doable.
      My System SpecsSystem Spec

  3. #3


    Posts : 2
    Windows 8.1


    Heya!

    Thanks for your reply, alphanumeric; and apologies for the lateness in mine.

    I can, indeed, confirm that launching the 8.1 Pro Volume License ISO does provide you with the option to upgrade and maintain all your settings. You must, of course, follow this by changing the product key to the VL one and re-activate Windows.
    Bottom line, even though it is not a supported upgrade path; and it does - in a way - require a 'reinstall", everything works as it should, and my 8.1 OEM is now 8.1 Pro VL.

    Thanks for the help!
      My System SpecsSystem Spec

  4. #4


    Sydney, Nova Scotia, Canada
    Posts : 6,490
    Windows 10 Education 64 Bit


      My System SpecsSystem Spec

Inability to upgrade Windows 8 Basic to Windows 8 Pro (VL)
Related Threads
inability to login to my Microsoft Account in User Accounts and Family Safety
I hope this goes somewhere where someone will help me fix my ongoing inability to login to my Microsoft Account. None of the steps works. I always get an invalid username or password prompt. I go through the steps using my email address, I insert the recovery code, I change the password. I am told...
Running Windows 8.1 Preview x64. I was attempting to update my graphics drivers on my Vaio SE2C5E using those provided here. Things were already a bit messed up before hand, with the switchable graphics ability randomly disappearing one day. Thinking that I was uninstalling the existing drivers I...
I have a few recovery questions for which I was unable to find specific answers to in the forum, but I did try to look first. 1) Is the recovery partition on my new Asus laptop a static recovery image which basically contains the OEM's Windows 8 installation? In other words, something that never...
Solved Windows 8 Basic QUESTION Help! in General Support
I'm buying a new desktop tomorrow & sadly it's 8! I'm pretty happy with it, whatever I don't mind. But it doesn't tell me what Windows 8 is it? (Windows 8, Windows 8 Pro, Or RT) I'M GUESSING It's the basic WINDOWS 8! Just Windows 8! Also I don't mind but just a question with this basic...
Basic Windows(8) help needed in General Support
About 1 week ago I automatically downloaded a microsoft update that seemed to go OK. At one Point it did ask for my name and I typed in John Smith. Ever since, when I turn my computer on it seems to have to start from new, meaning my start page is not there, my internet home page is not there,...
I installed Windows 8 RP on my laptop on another partition but my Windows 7 in C:/ got lost. How do I install it again? :(
Windows 8 is the default and only OS on this laptop. Please do not suggest restore or backups - they do not exist. I am trying to reinstall a fresh Windows 7 back into this laptop for dual boot purposes. I have a Win7 ISO all ready to go on a flash drive. The problem is... I cannot get the...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook