1. 

After you start the VMware Horizon client, you must configure it with desktop.ecmwf.int as the server. If there is any dialogue box asking for a user and password for the Reading system (vdesk.ecmwf.int) just cancel it and click on "desktop.ecmwf.int".

2.

Once the server is selected you will be sent to the authentication screen, where you will have to use your HID (either the hardware token or the software one). If by any chance you have already done this in your current browser session (eg if you started the Horizon client before, or even if you used Teleport just before) then this step will not be required

3.

Once the initial authentication is established (either with a new or a pre-existing authentication) the browser ask for you permission to run the "VMware Horizon Client". You must click Allow here 

4.

After clicking "Allow", you are directed to any already open VDI session, or to a login screen in case you don't have any. If you userid is not listed do click on the "Not Listed" option and type your UNIX userid.

5.

In case you have an open session you will see the "Lock" screen. You can press any key at this point and you will be directly to the "Unlock" screen. Here you can type your UNIX password and you should be able to unlock it.

6.

Once the session is started, you can either use the Activities menu at the top left to open the menu and then also use the search box to find applications. Be reminded that this Linux VDI will only have a small selection of software installed, as envisioned by the Bologna - End-user Compute and Interactive Access model. Most of the applications you will need are indeed installed in the Atos HPC and expected to be run from there with ecinteractive.

Most users will not need much more than a terminal and a browser at this point, even though the ecflow UI is also installed.