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Can you deploy (Win10-x64), for example; from a (x86-32bit) WinPE-boot environment?!?
  Or am I thinking backwards; [boot x64] to install (x86 or x64 OS)...

I need to be able to have a client boot a WinPE image from [disc/flash]; in order to repair/troubleshoot issues with Windows. So would be nice to remote into Windows installation disc; or any WinPE custom disc... Why is this so hard; when network is already active/loaded in WinPE...