An administrator is tasked with setting up an integration between Nutanix and Citrix PVS.

Comprehensive and Detailed Explanation From Exact Extract of Nutanix End User Computing documents:

According to the installation guide for the Nutanix AHV Plug-in for Citrix:

Plugin Registration: The Nutanix AHV plug-in functions as a Hardware Compatibility Layer (HCL) plugin within the Citrix architecture. This allows the Citrix Provisioning (PVS) Streamed VM Setup Wizard to communicate with the AHV hypervisor.

Service Restart: After installing the plug-in on the PVS Console machine (or the DDC where the wizard is being run), the administrator must restart the specific Citrix services that load these HCL plugins. The Citrix Remote HCL Server service (often associated with the proxying of hypervisor calls in PVS/DDC environments) must be restarted to register the new Nutanix connection type.

Resolution: Without restarting this service, the PVS wizard cannot enumerate the Nutanix AHV connection or resources, rendering the integration unusable until the service reload picks up the new plugin dlls.