Windows 10: Invalid Product Key

Discus and support Invalid Product Key in Windows 10 Ask Insider to solve the problem; I was experimenting if I can install windows 8.1 on my old computer for nostalgic purposes. I have 2 product keys I was able to recover from the... Discussion in 'Windows 10 Ask Insider' started by /u/WeirdInjury0, Dec 15, 2020.

  1. /U/WEIRDINJURY0
    /u/WeirdInjury0 Win User

    Invalid Product Key


    I was experimenting if I can install windows 8.1 on my old computer for nostalgic purposes. I have 2 product keys I was able to recover from the command prompt and third party programs. I then installed windows 8.1 iso to my usb and when I attempted to type both product keys it said they were wrong. Anything that can solve this issue? (This computer had windows 8.1 before but installed windows 10 on it. I still have the main box where the laptop was originally placed before unboxing. I don't have the manuals though)

    submitted by /u/WeirdInjury0
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    :)
     
    /u/WeirdInjury0, Dec 15, 2020
    #1
  2. #TABS1985
    #Tabs1985 Win User

    Invalid Product Key

    I've done all this but when I enter the product key it says it's invalid. Why would that be? How do I fix that?
     
    #Tabs1985, Dec 15, 2020
    #2
  3. CDEANT
    CDeanT Win User
    Invalid Product Key

    I bought my computer from Best Buy with Windows 10 preinstalled. Now I am upgrading Windows 10 and I get an invalid product key error. Why?
     
    CDeanT, Dec 15, 2020
    #3
  4. PAH1986
    PAH1986 Win User

    Invalid Product Key

    Invalid Product Key

    My system crashed and then when it came back on it required my Product Key, I entered the correct key and it tells me its invalid. I have Windows Vista but now its trying to tell me its not supported and I have to upgrade to Windows 10
     
    PAH1986, Dec 15, 2020
    #4
Thema:

Invalid Product Key

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