1- Take snapshots of all the Horizon View Servers:
- View Composer
- Connection Servers
- Security Servers (I am using access points so I will skip this part)
2- Backup composer database
3- Upgrade View Composer on existing host.
4- Make backups of Connection Servers and record configuration settings for each individual server.
5- Upgrade the Connection Server instance that is paired with this security server.
6- Remove IPsec rules for the security server paired with the Connection Server instance that you just upgraded.
7- Configure a security server pairing password using the latest version of Horizon Administrator.
8- On the host of the security server, download and run the installer for the latest version of Connection Server.
9- After the installer wizard is finished, verify that the VMware Horizon View Security Server service is started.
10- Log in to Horizon Administrator, select the security server in the Dashboard, and verify that the security server is now at the latest version.
11- In Horizon Administrator, go to View Configuration > Servers > Security Servers tab and remove any duplicate security servers from the list.
12- Log in to Horizon Administrator and examine the dashboard to verify that the vCenter Server and View Composer icons are green.