I've completely disabled the firewall on my local PC.

esxi ntp not updating-2esxi ntp not updating-54

Let’s talk first about why it is important to configure network time protocol (NTP) on ESXi host.

As you know NTP will sync the time of the host from external NTP server. Via VMware tools periodic time synchronization which is happening during specific events, such as: Many admins also use MAC or Linux desktops/laptops so the choice of ESXi host client is their preferred method.

I have tried: This updates the registry correctly, but outputs "The computer did not resync because no time data was available." And whenever I use the command "w32tm /query /source" the source is always "Local CMOS clock." Here is the output of w32tm /query /configuration [Configuration] Event Log Flags: 2 (Local) Announce Flags: 5 (Local) Time Jump Audit Offset: 28800 (Local) Min Poll Interval: 10 (Local) Max Poll Interval: 15 (Local) Max Neg Phase Correction: 3600 (Local) Max Pos Phase Correction: 3600 (Local) Max Allowed Phase Offset: 1 (Local) Frequency Correct Rate: 4 (Local) Poll Adjust Factor: 5 (Local) Large Phase Offset: 50000000 (Local) Spike Watch Period: 900 (Local) Local Clock Dispersion: 10 (Local) Hold Period: 5 (Local) Phase Correct Rate: 1 (Local) Update Interval: 360000 (Local) [Time Providers] Ntp Client (Local) Dll Name: C:\windows\system32\w32(Loca Enabled: 1 (Local) Input Provider: 1 (Local) Allow Nonstandard Mode Combinations: 1 (Local) Resolve Peer Backoff Minutes: 15 (Local) Resolve Peer Backoff Max Times: 7 (Local) Compatibility Flags: 2147483648 (Local) Event Log Flags: 1 (Local) Large Sample Skew: 3 (Local) Special Poll Interval: 900 (Local) Type: NTP (Local) Ntp Server: -IP of server-,0x1 (Local) Ntp Server (Local) Dll Name: C:\windows\system32\w32(Loca Enabled: 1 (Local) Input Provider: 0 (Local) Allow Nonstandard Mode Combinations: 1 (Local) I found the answer.

I had to set my upstream server as my own clock with IP address to make my server's clock synchronized.

Many people simply overlook the NTP configuration because they consider it as not so important. If your host is not configured with a correct time source then you might have problems with the time sync within your VMs as those picking time sync from your host. Perhaps they simply don’t want to use a Windows machine with v Sphere client installed or they don’t want to bother to set up a Windows VM through VMware Workstation/Player or Fusion. Connect to your ESXi host via v Sphere host client (if it’s individual host.

If the host is managed via v Center, use v Sphere Web client – we’ll join a screenshot too at the end of this post).

While we still have the possibility to manage single host via traditional v Sphere Client (Windows based), it becomes clear that sooner or later the legacy client will be gone.

That’s why this post – How to configure ESXi 6.5 Network Time Protocol (NTP) via Host Client as we’ll be using ESXi Host Client for the NTP configuration.

NTP is an Network Time Protocol which is used to sync the time with the NTP server whether it is local or outside. Step 6: NTP Service Status is stopped by default so Start the Service by clicking on the Start Button. In the NTP Server box Write the NTP Server Name according to your region.