This is a really simple fix actually. The OS version of our Litetouch WinPE needed to match the Microsoft Windows 10 TP version that we were trying to deploy. Therefore, if you are deploying Windows 10 TP x64 then your Litetouch WinPE needs to be x64. If you are trying to deploy Windows 10 TP x86 the your Litetouch WinPE needs to be x86. After loading the correct Litetouch WinPE file in our PXE/WDS server we are now able to deploy a error free Microsoft Windows 10 TP x64 with all the drivers installed.
Microsoft haven't officially added support to MDT for deploying Windows 10 TP as yet so until that is done we'll not know if this will continue to be an issue. In earlier versions of Windows(XP, Vista, 7, 8, 8.1) we can deploy x86 and x64 version of Windows when booting from an x86 WinPE file. Let's hope that this will be patched in the next MDT update.
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