There seems to be a bug in the Windows 10 1607 ADK when trying to load the components needed to for instance deploy a machine when using 802.1x in your network. The service fails to load with System Error 126 as shown in the screenshot below.

winpeThere are some comments about it on forums and as comments on blog posts as well.

For now the workaround would be to use WinPE from the Windows 10 1511 ADK.