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I have been trying to find the necessary command line switches for automating the upgrade for my Windows 8 clients to Windows 8.1. I have the ISO extracted and I've run setup.exe /? but that doesn't tell me enough.

I can't find any relevant information from search engines. Can anyone point me to some documentation or information on how to automate the upgrade so that it keeps user data, programs, etc? I know how to do it when running the installer manually, but I obviously do not wish to do that with 100+ machines.

Leonastas
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  • Thank you for your response, but this is not the case with this. Original installation of operating system is done through applying a wim file to a new machine. This is an inplace upgrade that can only be accomplished by running the setup installer in a specific manner. Two different beasties, unfortunately. – Leonastas Nov 05 '13 at 17:13
  • Related: [Update Windows 8 Enterprise to Windows 8.1 Enterprise KMS activation](http://superuser.com/questions/661517/update-windows-8-enterprise-to-windows-8-1-enterprise-kms-activation) – techie007 Nov 05 '13 at 17:30

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According to this link you can run the command setup.exe /auto:upgrade to automatically upgrade to 8.1.

magicandre1981
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