Microsoft have recently released a large update to Windows 10 called Creators Edition (v1703)
Unfortunately if you have installed this update you will no longer be able to connect to the service using our connector. On launching the connector the error will be displayed as below.
We are currently working on a solution but until that has been published we advise schools to delay installing the update: https://goo.gl/Gfh0A3
If the update has already been installed on a device you can download this RDP file and launch it as a temporary workaround.