Submit a ticketCall us

AnnouncementsCome see SolarWinds at VMUG Frankfurt

SolarWinds is delighted to attend the upcoming VMUG which will take place at Kap Europa in Frankfurt on June 19th, 2018.

See event details.

Home > Success Center > Virtualization Manager (VMAN) > VMware vCenter servers display as Unknown in VMAN

VMware vCenter servers display as Unknown in VMAN

Updated December 4, 2017


When you poll for all VMware vCenter® servers on an Additional Polling Engine (APE), the procedure fails with following message in the VIM Business Layer:

2017-11-28 12:19:46,769 [45] ERROR SolarWinds.VIM.BusinessLayer.Polling.VMwareProbeResultsProcessorBase - Error sending probe job results to main BL.
SolarWinds.ApiProxyFactory.TransientApiProxyException: Exception of type 'SolarWinds.ApiProxyFactory.TransientApiProxyException' was thrown. ---> System.ServiceModel.EndpointNotFoundException: No DNS entries exist for host main.orion.server. ---> System.Net.Sockets.SocketException: No such host is known
at System.Net.Dns.GetAddrInfo(String name)


  • Virtual Manager (VMAN) 8.0
  • Orion Platform
  • Additional Polling Engine


Incorrect DNS configuration on the Additional Polling Engine.


Configure the correct DNS entries in Microsoft® Active Directory® or the hosts files. 




Last modified