I have been working on this for a while trying to figure out why any Windows system would fail being converted to an ESXi server. I tried different PC's, different ESXi servers with different versions of ESXi and they all failed. The one thing I didn't change was using an older version of the converter. I was using version 6.1.1 on all of the different PC's.
Today I uninstalled version 6 and installed version 5.5.3 of the converter and it works.
Version 6 would convert a Linux server without an issue it was just any type of Windows system. The converter would get up to 98% and then the bar would go back to 3% to 6% and fail. The logs showed a network error which I know wasn't correct because I could convert a Linux server.
I am attaching the logs from the failed v6 and the working v6. Maybe someone can see something I am missing.