Posted by ubiquitous on Nov 26, 2018; 6:36am
URL: https://forum.librecad.org/printer-is-not-connected-with-windows-10-tp5716664p5716682.html

You may find someone on this forum with the necessary knowledge to assist you but, as the forum is for help with using LibreCAD the problem you mention is with your Windows operating system (specifically update installation) and, as such, is outside the range of discussion here.
Try this link Microsoft Community where a number of suggestions are made for attempting to overcome the error.