Red screen on desktop preview?

[jmhadaller]

Hi, i'm new to Veyon and trying to get it setup. When I added the second computer to Veyon, it does not load the preview but instead displays a moonitor with a red infill.

What could cause this, and how could I go about fixing it?
Help is greatly appreciated.

Jessie M. Hadaller
Founder & CEO, iTs Jess Networks

[tobydox]

A red screen usually indicates authentication problems, i.e. either the authentication keys have not been setup properly on both teacher and student computers or logon authentication fails due to invalid credentials entered on Veyon Master startup.