Before you install vCenter Server, make sure all machines on your vSphere network have their clocks synchronized.

This task explains how to set up NTP from the VMware Host Client.


  1. Start the VMware Host Client, and connect to the ESXi host.
  2. Click Manage.
  3. Under System, click Time & date, and click Edit settings.
  4. Select Use Network Time Protocol (enable NTP client).
  5. In the NTP servers text box, enter the IP address or fully qualified domain name of one or more NTP servers to synchronize with.
  6. From the NTP Service Start-up Policy drop-down menu, select Start and stop with host.
  7. Click Save.
    The host synchronizes with the NTP server.