Horizon 7 and later components have the TLSv1.0 security protocol disabled by default. If your deployment includes an older version of vCenter Server that supports only TLSv1.0, you might need to enable TLSv1.0 for Connection Server connections after installing or upgrading to Connection Server 7.0 or a later release.
Some earlier maintenance releases of vCenter Server 5.1, and 5.5 support only TLSv1.0, which is no longer enabled by default in Horizon 7 and later releases. If it is not possible to upgrade vCenter Server to a version that supports TLSv1.1 or TLSv1.2, you can enable TLSv1.0 for Connection Server connections.
Prerequisites
- If you are upgrading to Horizon 7, perform this procedure before you upgrade to minimize the number of times you must restart the service. During an upgrade the Connection Server service is restarted, and a restart is required to apply the configuration changes described in this procedure. If you upgrade before you perform this procedure, you will need to restart the service a second time.
- See the Microsoft TechNet Web site for information on how to use the ADSI Edit utility on your Windows operating system version.