VMware ESXi Embedded Host Client – 503 Service Unavailable


If you have installed the ESXi Embedded Host Client (Link) you might find occasionally when trying to log onto a VMware Host the following message is displayed

Screen Shot 2017-11-09 at 1.32.26 PM

It is a reasonably simple fix to get access again to the Host.


  • SSH as root onto the ESXi host that is displaying the error
  • Run the following command
    • /etc/init.d/rhttpproxy restart
  • The following output should be seen

Screen Shot 2017-11-09 at 1.33.57 PM

  • Go back to browser and type in ‘https://esxiservername/ui‘ to test the error has gone away. It should load into a login prompt if the error has been fixed


  • I would recommended if you are seeing this happen at a lot make sure that the latest version on the embedded host client is installed. It can be updated within in the client or using VUM.

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