Windows 8 and 8.1 Forums


8.0 to 8.1 pro...bad key

  1. #1

    8.0 to 8.1 pro...bad key


    While trying to do a clean install from 8.1 pro from dvd drive. I found out my orginal 8.0 dvd product key would not work. I have the iso files on my ssd somewhere.Just can't get into win 8.1 because windows will not get past the blue
    windows icon.

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  2. #2


    Posts : 2,690
    Windows 3.1 > Windows 10


    A Windows 8 Key will not work, or activate Windows 8.1 Pro..

    You can activate Windows 8.1 with your Windows 8 product key..

    You can download and create Windows 8.1 Setup media > Create installation media for Windows 8.1 - Windows Help
      My System SpecsSystem Spec

  3. #3


    Quote Originally Posted by KYHI View Post
    A Windows 8 Key will not work, or activate Windows 8.1 Pro..

    You can activate Windows 8.1 with your Windows 8 product key..

    You can download and create Windows 8.1 Setup media > Create installation media for Windows 8.1 - Windows Help
    I am a little confused seems like you say win 8 key won't activate 8.1 pro, then you say yes you can.

    Sorry I see what I missed one is 8.1 and is 8.1 Pro...my bad
      My System SpecsSystem Spec

  4. #4


    Posts : 2,690
    Windows 3.1 > Windows 10


    a windows 8 key will activate windows 8.1

    a windows 8 Pro key will activate windows 8.1 Pro

    a Pro version key is needed to activate the Windows Pro version
      My System SpecsSystem Spec

  5. #5


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


    Short answer, Windows 8.1 Pro will not accept a Windows 8.0 (Core) key. It has to be a Windows 8.0 Pro key. Try installing 8.1 (Core) instead of 8.1 Pro and your key should be good.
    You can download 8.1 here, Create installation media for Windows 8.1 - Windows Help
      My System SpecsSystem Spec

  6. #6


    Thanks guys...worked just as you said.
      My System SpecsSystem Spec

8.0 to 8.1 pro...bad key
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