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I have reinstalled Windows 10 Pro 64-Bit with a Windows 10 Pro 64-Bit CD. After the installation, I realized, that there has been Windows 10 Home edition installed.

Since the installation never asked for a product key, I tried to enter it after the setup, updates and so on...

An error message says, that the key is invalid.

How did I installed a Home version with Pro CD? If I have the CD, can I upgrade my version to Pro?. (Reinstalling did not work either.)

Hugo Vrana
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  • "How did I installed a Home version with Pro CD?" - Which edition did your machine come with? Edit your question to include this vital information necessary to answer your question. – Ramhound Jan 16 '19 at 17:06
  • Possible duplicate of [Prevent Windows 10 installer from using the preinstalled serial key without disabling UEFI](https://superuser.com/questions/1020961/prevent-windows-10-installer-from-using-the-preinstalled-serial-key-without-disa)[.](https://superuser.com/questions/1391868/prevent-windows-10-from-activating-with-win-8-1-embedded-bios-key#comment2099133_1391868) – Ramhound Jan 16 '19 at 17:23
  • Solution to this problem is to simply perform the upgrade to Professional again using the key you originally used. The answer to the linked duplicate provides a method to install Windows 10 Professional, even if your OEM machine came with, Windows 10 Home. – Ramhound Jan 16 '19 at 17:25

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I have seen some installation media that contains multiple versions. Specifically, I have a Windows 10 ISO that has Pro and Home editions and you have to chose during installation what version you use. Screenshot of OS version choice. May also be a dropdown.

Michael Ritchey
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