Clone VM Customize Guest OS not starting

Hey all,

Whenever I try to clone one of my VMs it never syspreps and customizes the settings. I am trying to clone a Win10 1909 VM, its my build server for Jenkins so it has a lot of crap on it. I see C:\Sysprep\ created with the sysprep.xml with all my settings. Does anyone know a way to manually start up the configuration process? I know I could just sysprep, and set it all up myself, but just trying to learn more how this process works. I’ve tried to sysprep with the unattend file, but that doesn’t work.

I have tested with my base Win10 1909 VM, and i am able to clone and it auto customize, but I have no clue where to even look to see why its failing, or how to kickstart the process manually.

Any pointers would be helpful.

ESXi 6.7 U3


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  1. VMware Tools installed? Guest OS selected correctly in vCenter? Guest customisation has dependencies on both of these, and the answer is usually one of the two.

  2. Hi,

    Check sysprep logs: https://kb.vmware.com/s/article/2001932

    It may be because of Appx packages, and in the logs there will be entires if this is the cause and then you can remove the Appx with Powershell (google Remove Appx with Powershell).

    If you don’t need Appx just remove everything:

    Get-AppxPackage -AllUsers | Remove-AppxPackage
    Get-AppxProvisionedPackage -Online | Remove-AppxProvisionedPackage -Online

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