ALL credits for this solution go to my dear friend jutaky who doesn't play anymore but generously gave his time to cure my witdrawal symptoms.
If you post this anywhere else please include his name, thanks.
* * *
I use LinuxMint 19.3 (tricia)
* * *
sudo apt-get update
sudo apt install aria2
~$ aria2c --version
mkdir ~/tso
cd ~/tso
~$ cd ~/tso
afke@afke-Latitude-E6420:~/tso$
aria2c -x 3 https://az792536.vo.msecnd.net/vms/V...VirtualBox.zip
open up another terminal window
sudo apt install virtualbox
unzip MSEdge.Win10.VirtualBox.zip
find virtualbox in menu and open
from top left File > Import Appliance
find your home folder, open the "tso" folder, select the .ova
select appliance settings
from the Virtual Disk Image path replace "VirtualBox VMs" with "tso" so that it reads /home/username/tso/MSE..... etc
click Import from bottom right, it will take awhile as it unpacks the appliance
virtual windows 10 will start
proceed to open the edge browser and navigating to the tso website for the download of the TSO client exe
IEUser is the preconfigured user, just click it
use Passw0rd! (that is a zero)
* * *
lateron the "tso" folder can be deleted and everything related to this project is destroyed freeing up all the disk space