Domain controller Time issue

Hi

 i have 2 domain controller on guest Vm in Hyper-v 2012  Environment, the time on DC1 is running a head of 10 min, & all the machine member server & clients are with same time in network, how can i change the time to internet time zone. or any internal firewall.

1. is this should be done in production environment,
2. does the client in network face any issues. once the time is change in DC1.

please share the detail step to get rid of this issues.

Thank you
aaziz_616Asked:
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George SimosConnect With a Mentor IT Pro Consultant - IT Systems AdministratorCommented:
Hi and happy new year!

Please check my answers for the same questions here http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/Q_28307311.html
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MiftaulCommented:
DC holding PDC emulator role needs to be time synced with any good time source. Once set, clients will automatically time sync with the DC.
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Paul MacDonaldConnect With a Mentor Director, Information SystemsCommented:
Configure (all) your DCs to use a public NTP server.  A complete guide is available here:

http://www.sysadminlab.net/windows/configuring-ntp-on-windows-server-2012
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MiftaulCommented:
Only PDC emulator maintains the time on DCs. As log as the PDC emulator holds correct time, all DC's including Clild DCs and clients, should have that exact time.

Could you clarify why all the DCs should be configured to sync with Public NTP server?
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Paul MacDonaldDirector, Information SystemsCommented:
Because there's no reason not to.

Domain clients will sync to whatever DC they have available.  DCs will prefer to sync with the PDC Emulator.  In the event the PDC Emulator is not available, the other DCs will have still have the correct/consistent time.
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MiftaulCommented:
Good Learning, thanks paulmacd
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Will SzymkowskiSenior Solution ArchitectCommented:
As you have stated your DC's are located on a VM host. Make sure that the VM's are not receiving there time from the host machine. This will create issues and force your DC's to get the time from the host machine rather than an external time source.

Once you have ensured that this setting is disabled you can configure an external time source for your PDC.

External time source - http://support.microsoft.com/kb/816042

Will.
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aaziz_616Author Commented:
Thanks for sharing Guyz...
 Excellent worked...
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