1. Windows Central Question's Avatar
    I have 4 machines with the latest insider version installed. all were updated from win 8.1. I now see product ID, but no serial numbers on two of them. where did they disappear to.
    09-17-2016 05:19 PM
  2. vezycash's Avatar
    Check to see if they are activated. After that, login your microsoft account. Once you do that, you'll not need to know the serial number. Because it'll activate by itself even if you format the machine. See these articles for more info:



    If you really want to know the Windows Product Key, use tools RJL Software - Software - Utility - Windows Product Key Viewer

    Or just google Windows Product Key finder or viewer
    Chintan Gohel likes this.
    09-18-2016 03:05 AM
  3. Chintan Gohel's Avatar
    I have 4 machines with the latest insider version installed. all were updated from win 8.1. I now see product ID, but no serial numbers on two of them. where did they disappear to.
    If you need additional help or have more questions or details to share, please join the site so you can reply in this thread. See this link for instructions on how to join Windows Central.
    09-25-2016 12:50 PM

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