11 Nov 2008

VMControl error -999: Unknown error: SoapError: ServerFaultCode(1520) : (vim.fault.TaskInProgress)

I came across the following problem a couple of times:

In VirtualCenter, when trying to delete a virtual machine that is switched off, VirtualCenter comes up with:

"Operation failed since another task is in progress"

Also, when trying to use the vmware-cmd command to START, STOP, RESET, SUSPEND or UNREGISTER on the Virtual Machine, the ESX Server responds with:

VMControl error -999: Unknown error: SoapError: ServerFaultCode(1520) : (vim.fault.TaskInProgress)

Yet, when issuing the vmware-cmd getstate command, the ESX Server responds with "Off"


The following solution has always fixed the problem for me:

Just execute the following command on the ESX Server:

service mgmt-vmware restart



  • No Host Reboot or Downtime Required
  • No Virtual Machine Downtime Required
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Last modified on Friday, 12 March 2010 12:42
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