How To - Upgrade VMware Horizon Client Version
Download Link à https://download3.vmware.com/software/view/viewclients/CART22FH2/VMware-Horizon-Client-2111-8.4.0-18968194.exe
Click on the file in download folder and install

When the reboot has completed, you should see this icon below, on your screen that you can use to connect to VMware as normal.

Add the server "trapp.horizondistributors.com"
https://customerconnect.vmware.com/en/downloads/info/slug/desktop_end_user_computing/vmware_horizon_clients/horizon_8