On Windows 10 there is an error introduced by a Windows update which has been resolved by another windows update.

The error dialog pops up when attempting to generate the nc code for the CNC and states “Output failed: Transmit Connect Error”.

This happens when using ATP or G1 command and there is no resolution besides forcing windows update to keep checking for updates until updates are detected which should include a Cumulative Update for Windows 10 Version 1607 for x64-based Systems

In order to force this it may be necessary to do a shutdown of the computer and restart until updates are found.