While adding VMs created by Citrix Provisioning Services, you may receive this error : Error : ‘Error expanding node’ . This issue occurred as the machine catalogue was initially created in PVS version 6.x. and current PVS version is higher than that. This is a well-known issue and a Citrix article is available here . Get It Resolved : RDP to Citrix Studio server, launch PowerShell console. Add Citrix snap-in by inserting below command : Command : asnp Citrix* List all Machine Catalog configured in the environment by inserting below command Command : get-BrokerMachine All Machine Catalog information listed