1.    14 Apr 2016 #1
    Join Date : Apr 2016
    Posts : 18
    Windows 10

    Can you fresh install Windows 10 using a valid Windows 7 key?


    ^^^
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  2.    14 Apr 2016 #2
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,070
    Win 10 Pro (1703)

    This is from the Tutorial section - please feel free to browse and search it.. very useful.
    Clean Install Windows 10 Directly without having to Upgrade First - Windows 10 Forums

    Others are experts on the differences between OEM and retail licenses.
    What sort of license do you have?
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  3.    14 Apr 2016 #3
    Join Date : Apr 2016
    Posts : 18
    Windows 10
    Thread Starter

    Sorry - that's not what I wanted. I have a Windows 7 key that is not currently in-use. That guide appears to be for someone who is currently running on the Windows 7 key they want to use.
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  4.    14 Apr 2016 #4
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,070
    Win 10 Pro (1703)

    From build 10540 (Nov last year) entry of the retail key was permitted.

    That tutorial shows the upgrade relationships between the versions of Windows as well.

    Can I buy a Key for windows 7, install the ISO, then upgrade to 10? - Windows 10 Forums
    - e.g. see #5

    I clean installed Win 10 Pro on this PC using my Win 8 Pro license.
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  5.    14 Apr 2016 #5
    Join Date : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 10,449
    Windows 10 IoT

    From what I have read, yes, you can do that.
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  6.    14 Apr 2016 #6
    Join Date : Jul 2015
    Posts : 9,416
    Windows 10 Pro

    You can try it. Sometimes, but not always, Microsoft will reject the Windows 7 Product Key when attempting to activate Windows 10 with it with the reason "Key is in use on another computer." The only solution then is to temporarily install Windows 7 on the computer you want it on, activate it over the phone. Then I recommend getting the genuineticket.xml file. Then Windows 10 will activate on that computer with the Windows 7 key. But if that Windows 7 product key was never used on another computer, it should be fine.
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  7.    14 Apr 2016 #7
    Join Date : Apr 2016
    Posts : 18
    Windows 10
    Thread Starter

    Quote Originally Posted by NavyLCDR View Post
    You can try it. Sometimes, but not always, Microsoft will reject the Windows 7 Product Key when attempting to activate Windows 10 with it with the reason "Key is in use on another computer." The only solution then is to temporarily install Windows 7 on the computer you want it on, activate it over the phone. Then I recommend getting the genuineticket.xml file. Then Windows 10 will activate on that computer with the Windows 7 key. But if that Windows 7 product key was never used on another computer, it should be fine.
    Thanks for letting me know
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  8.    14 Apr 2016 #8
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,070
    Win 10 Pro (1703)

    @NavyLCDR "The only solution then is to temporarily install Windows 7 on the computer you want it on, activate it over the phone."

    should that be 10?
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  9.    14 Apr 2016 #9
    Join Date : Mar 2015
    Philadelphia
    Posts : 1,174
    Windows 10 Pro x64

    Yes, I've done so on a computer I built for my in-laws. It was a clean install on a blank drive, no previous OS or digital entitlement. I entered one of my many unused Windows 7 keys, and it activated without issue.
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  10.    14 Apr 2016 #10
    Join Date : Jul 2015
    Posts : 9,416
    Windows 10 Pro

    Quote Originally Posted by dalchina View Post
    @NavyLCDR "The only solution then is to temporarily install Windows 7 on the computer you want it on, activate it over the phone."

    should that be 10?
    Nope. If Windows 10 fails to activate because Microsoft says the product key is being used on another computer, re-installing Windows 10 won't fix it and you can't activate Windows 10 via phone activation with a Windows 7 product key.
    Last edited by NavyLCDR; 14 Apr 2016 at 10:19.
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