Update Manager fails to update some hosts with an Unknown Error
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Update Manager fails to update some hosts with an Unknown Error


Article ID: 340633


Updated On:


VMware vCenter Server


  • Update Manager fails to update some hosts and displays the message:

    Unknown Error
  • The vmware-vum-server-log4cpp.log file (located at C:\Documents and Settings\All Users\Application Data\VMware\Update Manager or C:\Users\All Users\VMware\VMware Update Manager\Logs on the Update Manager server) contains errors similar to:

    'HostUpdateDepotManager' 7692 ERROR] Unknown Host Error:
    'SingleHostStageTask.SingleHostStageTask{155}' 7692 ERROR] [singleHostStageTask, 266] SingleHostStage: Unknown Host Error:


VMware vCenter Update Manager 4.0.x
VMware vCenter Update Manager 4.1.x


This issue occurs if a host cannot find the Patch Depot for updates.


To resolve the issue, update the PatchDepotUrl/> line in the vci-integrity.xml file:
  1. Make a backup of the file C:\Program Files\VMware\Infrastructure\Update Manager\vci-integrity.xml.
  2. Open vci-integrity.xml for editing.
  3. Locate the <PatchDepotUrl> entry.
  4. Modify this entry to:


    Where VC_IP is the IP address of your vCenter Server.
  5. Save and close the file.
  6. Restart the Update Manager services. For more information, see Stopping, starting, or restarting the vSphere Update Manager service.