Upgrade Windows 10 Home to Windows 10 Pro  

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  1.    #40

    RoasterMen said: View Post
    It is somewhat "illegal" to purchase OEM keys.

    These keys are so cheap for whatever reason. They're bought in bulk and are to be used by PC manufacturers for laptops and pre-built desktop systems.

    Do note that once you have an OEM key activated, you cannot deactivate it and activate it on another system as it is already with your motherboard.
    This key came with the lenovo e545 I purchased in 2014(I think). The "Free" win10 upgrade would never complete...allways went to the end and said, "there was a problem" and reboot into win7 pro. Thought what thread was saying was the key could be used if it never been used to update. No buying illegal keys happening.
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  2. DooGie's Avatar
    Posts : 5,422
    Wndows 10 x64 Pro version19H1 18358
       #41

    Is it possible to upgrade a Windows 10 Home PC activated on a retail key to Windows Pro using a Pro OEM key ?
      My ComputerSystem Spec

  3. Brink's Avatar
    Posts : 36,863
    64-bit Windows 10 Pro build 18855
    Thread Starter
       #42

    DooGie said: View Post
    Is it possible to upgrade a Windows 10 Home PC activated on a retail key to Windows Pro using a Pro OEM key ?

    Hello Andy,

    You should be able to as long as the OEM key has never been activated on a different computer/motherboard.
      My ComputersSystem Spec

  4.    #43

    DooGie said: View Post
    Is it possible to upgrade a Windows 10 Home PC activated on a retail key to Windows Pro using a Pro OEM key ?
    Brink said: View Post
    Hello Andy,

    You should be able to as long as the OEM key has never been activated on a different computer/motherboard.
    This document from Microsoft seems to indicate otherwise:

    https://devicepartner.microsoft.com/...ing_Guide-docx

    "System Builder product may not be used as an upgrade license to an existing underlying Windows operating system.

    With the Windows 10 System Builder product, you:
    Can do only clean installs for new PCs (no upgrades).
    Will not be able to keep settings, files, or user preferences as it is a clean install."

    System Builder product is another name for OEM. In addition, in the latest versions of Windows, I think in 1803 and 1809, possibly even earlier, Microsoft has disabled the ability to upgrade from Home to Pro using the generic Pro product key of VK7JG-NPHTM-C97JM-9MPGT-3V66T unless there is already a digital license for Pro for that computer established. It used to be that you could upgrade to Pro using the -3V66T product key and without a digital license you would just end up with Pro that was not activated. With the latest versions of Windows 10, Microsoft has closed that loophole.
    Last edited by NavyLCDR; 3 Weeks Ago at 21:24.
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  5. DooGie's Avatar
    Posts : 5,422
    Wndows 10 x64 Pro version19H1 18358
       #44

    Thanks for the replies @Brink and @NavyLCDR. When I said the Pro key was an OEM one I'd jumped to conclusions, it turned out to be retail when I checked it in ShowKeyPlus. I'd been browsing Amazon for Windows 10 Pro and noticed that keys were being sold for stupidly low prices (the reason I assumed they were OEM keys). My 10 Home upgraded to Pro in about fifteen minutes and activated with no problems. So the upgrade for the price of two pints of beer


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    Last edited by DooGie; 3 Weeks Ago at 08:51.
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  6. Brink's Avatar
    Posts : 36,863
    64-bit Windows 10 Pro build 18855
    Thread Starter
       #45

    DooGie said: View Post
    Thanks for the replies @Brink and @NavyLCDR. When I said the Pro key was an OEM one I'd jumped to conclusions, it turned out to be retail when I checked it in ShowKeyPlus. I'd been browsing Amazon for Windows 10 Pro and noticed that keys were being sold for stupidly low prices (the reason I assumed they were OEM keys). My 10 Home upgraded to Pro in about fifteen minutes and activated with no problems. So the upgrade for the price of two pints of beer

    Great news.
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  7. DooGie's Avatar
    Posts : 5,422
    Wndows 10 x64 Pro version19H1 18358
       #46

    Brink said: View Post
    Great news.
    Thanks Brink it is. As an aside it also cured my problem of not being able to switch Insider Rings
      My ComputerSystem Spec

  8. Snugglebugs's Avatar
    Posts : 30
    Windows 8.1 (with Bing!), Win 7 Pro X86, Win 10 64
       #47

    I am hoping to upgrade to Win 10 Pro from Home but as I haven't been educated in what all the strange MS terms mean, I find have two questions - dumbo!

    1. Using Keyfinder I learn that my refurb Lenovo PC has

    Windows 10 Home
    Product Part No.: [TH]X19-9
    Installed from 'OEM' media.
    Product ID: 00***-*0000-00000-AAOEM match to CD Key data
    CD Key: *****-*****-*****-*****-***** (
    my asterisks for a real MS code)

    I wonder about that AAOEM bit. Is that a problem?

    2. I have a key for an install I bought online for Win 7 Pro which was used to install on an old PC which no longer works. It was accepted for activation 5 years ago without any problem. Does that have to be deactivated somehow before I can use it for the Win 10 upgrade?

    I have been rummaging around in old devices and trying Keyfinder on the ones that work. Also looking at the old Microsoft Certificates stuck on the cases. That has given me quite a stock of genuine keys! Win 98 (2), Win XP Pro, Win 7 Pro (2) and now Win 10 Home. I don't suppose the very old ones are any good for this task

    Tony

    By the way, I see that Keyfinder has the phrase "Installed from 'OEM' media." on all the scans it did on 4 different devices. So I suspect it doesn't actually mean much!
      My ComputerSystem Spec

  9.    #48

    @Snugglebugs
    Microsoft Certificates stuck on the cases.
    Are ONLY valid to for the machine they are stuck on and no other. They are NOT transferable. Sorry
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  10. Snugglebugs's Avatar
    Posts : 30
    Windows 8.1 (with Bing!), Win 7 Pro X86, Win 10 64
       #49

    Useful to know.
    However, both of my Win 7 Pro were from product I bought as 'electronic downloads', to upgrade existing machines. One machine was bought with XP installed and the other with basic MS-DOS installed for me, the user, to install whatever I wanted.

    So they were not supplied with specific machines.
    OK?

    As I wrote, one machine does not even exist any more. As there is no way to "deactivate" the OS, I must assume that I can use that code without problem?

    Tony
      My ComputerSystem Spec


 
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