Upgrade Windows 10 Home to Windows 10 Pro  

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  1.    1 Week Ago #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 : 5,271
    Wndows 10 x64 Pro version 1809
       14 Hours Ago #41

    Is it possible to upgrade a Windows 10 Home PC activated on a retail key to Windows Pro using a Pro OEM key ?
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  3. Brink's Avatar
    Posts : 36,128
    64-bit Windows 10 Pro build 18836
    Thread Starter
       14 Hours Ago #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.
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  4.    12 Hours Ago #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; 11 Hours Ago at 21:24.
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  5. DooGie's Avatar
    Posts : 5,271
    Wndows 10 x64 Pro version 1809
       1 Hour Ago #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. 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; 48 Minutes Ago at 07:49.
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