The operation of VMware Horizon 8 depends on several services that run on a Connection Server host.

Table 1. Horizon 8 Connection Server Host Services
Service Name Startup Type Description
VMware Horizon Blast Secure Gateway Automatic Provides secure HTML Access and Blast Extreme services. This service must be running if clients connect to Connection Server through the Blast Secure Gateway.
VMware Horizon Connection Server Automatic Provides connection broker services. This service must always be running. If you start or stop this service, it also starts or stops the Framework, Message Bus, Security Gateway, and Web services. This service does not start or stop the VMwareVDMDS service or the VMware Horizon Script Host service.
VMware Horizon Framework Component Manual Provides event logging, security, and COM+ framework services. This service must always be running.
VMware Horizon Message Bus Component Manual Provides messaging services between the VMware Horizon 8 components. This service must always be running.
VMware Horizon PCoIP Secure Gateway Manual Provides PCoIP Secure Gateway services. This service must be running if clients connect to Connection Server through the PCoIP Secure Gateway.
VMware Horizon Script Host Disabled Provides support for third-party scripts that run when you delete virtual machines. This service is deactivated by default. You should activate this service if you want to run scripts.
VMware Horizon Security Gateway Component Manual Provides common gateway services. This service must always be running.
VMware Horizon Web Component Manual Provides web services. This service must always be running.
VMwareVDMDS Automatic Provides Horizon LDAP services. This service must always be running. During upgrades of VMware Horizon 8, this service ensures that existing data is migrated correctly.