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Windows Server 2012 date / time off.

Hi all,

I have an EXSi 5.5 machine running a guest that's Windows 2012 Server R2. The date and time on this server is off by a few hours. I'm assuming that it's picking up the time from the host machine BIOS? If i change the time from Windows Server 2012, it doesn't seem to stick.

What's the best way to set the time on Server 2012 so it sticks? Do i need to go into the BIOS of the host computer and set the time there (that would be difficult, as it's headless).

Thanks in advance.
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Go-Bruins
Asked:
Go-Bruins
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3 Solutions
 
John HurstBusiness Consultant (Owner)Commented:
Go into the Time settings in Control Panel. You should be able to set for Internet Time. Can you?  Does that work?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Sync ALL Windows VMs Time with your Domain Controller, which should be synced to an External Time Source.

and make sure the ESXi Host is synced with the same external time source as above.
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Go-BruinsAuthor Commented:
Thanks for the responses. Setting the time in control panel doesn't seem to stick.

This is a home lab. The computer in question is the only server, and it is the domain controller.

Does this affect the time that the VM's look for when booting up?

Scrren
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John HurstBusiness Consultant (Owner)Commented:
Did you check the time on the ESX machine?
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Go-BruinsAuthor Commented:
That's hard to do. I'm not at the site, and it's a headless machine.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
depends if the VMs are syncing time with ESXi. (which is now disabled  by default)

you also need to ensure that ESXi is syncing to something!
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Go-BruinsAuthor Commented:
How do i specify what ESXi is syncing to?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Click Options in that screenshot > NTP Settings - Add - Insert IP Address or DNS name of time Server ?
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Go-BruinsAuthor Commented:
Thank you.

Does this mean that every guest takes its cue from this time server?

Is this standard practice for admins?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Only if VMware Tools is installed, and Guest Sync Time with host.

Best Practice is what I posted in https:#a41736637 above.
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Go-BruinsAuthor Commented:
Great - thank you.
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