I am attempting to install Ubuntu, and I am getting a serial number prompt.

I don't understand, if Ubuntu is free, why do I need to enter a serial number? How do I obtain one?

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  • 14
    I never encountered this before. Ubuntu is free. How did you install? Where did you get your installation medium from?
    – PerlDuck
    Nov 30, 2018 at 11:27
  • 3
    Have you downloaded the install-media from Ubuntu website ot where ?
    – Soren A
    Nov 30, 2018 at 11:37
  • 4
    Is it a genuine site? What is the link please?
    – DK Bose
    Nov 30, 2018 at 11:59
  • 2
    @Richard please do tell us about the source of the installation medium.
    – Vijay
    Nov 30, 2018 at 13:11
  • 5
    You're using an invalid, malicious installer. DO NOT continue to use it. Ubuntu is free and has NO serial codes.
    – Thomas Ward
    Nov 30, 2018 at 21:24

1 Answer 1


Actually, I have never seen such before. Ubuntu Operating System is 100% free.

I think this installer you're using is probably not Ubuntu OS or at least is a customized version made by someone else.

To cut the long story short, I will recommend you download Ubuntu form here and install.

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