You need your firewall to let TCP / UDP 

443 / 80 / 3389 

ports opened for ingoing and outgoing traffic.


These are the IP addresses to open at the level of software and hardware firewalls:


93.88.241.55 :     License / telemetry


51.254.22.117 :   Updates


83.166.153.206 : TSplus compatibility updates / Check for updates / View changelog


These are the URLs to allow for updates:


setup.dl-files.com 

dl-files.com 

secure-download-file.com