How to get product key of old OS (Win 7) after upgrading to Win 10?

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  1. alphanumeric's Avatar
    Posts : 14,072
    Windows 10 IoT
       #71

    hawkman said:
    Now that is interesting,
    I was under the impression there was a scheduled Task, that was due to be run to remove the window.old file,
    MIND YOU that was 30 days AFTER the upgrade was installed.

    Roy
    I did a clean install, not a rollback. Kari was wondering if the keys got blocked after the 30 day period ended. I was just confirming they weren't. As far as I know they are never blocked as a result of doing the free upgrade.
      My Computer


  2. Posts : 2
    Windows 10
       #72

    So there is no chance to get the key once you reinstalled the OS?

    P.S It is indeed a way out to find windows 7 product key.
    Last edited by ffansszi; 21 Oct 2016 at 01:06.
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  3. lx07's Avatar
    Posts : 5,479
    2004
       #73

    ffansszi said:
    So there is no chance to get the key once you reinstalled the OS?
    The last comment on this thread was more than a year ago. Perhaps you should ask your own question.

    But to answer your question, no. Probably not (depending what you mean by "the key")
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  4. Berton's Avatar
    Posts : 10,506
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #74

    My experience is that a clean install would wipe out any reference to the Product Key on Win7 but Win8 and later may have it embedded in the BIOS, possibly even in Vista [have a Dell that came with Vista that has it that way]. But you might search for and download ShowKey from this forum to check. The Dell I mentioned was first Upgraded to Win7 so I could get the Insider Preview and ShowKey makes no mention of the Win7 Product Key, only the original key that is used by Dell when shipped, not the COA sticker Key.
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  5. lx07's Avatar
    Posts : 5,479
    2004
       #75

    True.

    It is October 12 2016 not October 12 2015 though.
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  6. Berton's Avatar
    Posts : 10,506
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #76

    lx07 said:
    True.

    It is October 12 2016 not October 12 2015 though.
    Also true, last post was October 11, 2015 but the 2 posts this AM resurrected it. I'd think posts should actually be closed after a set time to keep issues more relevant, for example, there was the Version 1511 Ugrade and now a year later is Version 1607.
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