Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Domain controller sync time

Posted on 2014-12-12
9
Medium Priority
?
45 Views
Last Modified: 2015-10-03
I have a domain controller on another site connected via LAN extender. The time drifted out on this domain controller. I am unsure how this happened as I thought the domain controller should be syncing time with the PDC every few minutes. I am not referring to external time sources. All other DC's are fine.
0
Comment
Question by:Sid_F
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 2
  • 2
9 Comments
 
LVL 15

Expert Comment

by:JBond2010
ID: 40495984
You need to ensure that AD replication is functioning and is not broken. From the problematic DC, open the command prompt and run this command;

repadmin /syncall /AdeP

Also, you need to ensure that ports are not being blocked for AD communication. The port number for time is UDP port 123. Ensure that the DC can communicate with the PDC DC on this port.

Regards,

JBond2010
0
 
LVL 2

Expert Comment

by:FinServCo
ID: 40496094
Is this a virtual machine?  I've had issues with DCs on VMWare.  Even if you check the box that says don't sink with the host server, I've had them do that.  So I've had to set VMWare's NTP to point to the PDC emulator to make sure it's time is in sink with the DCs.
0
 
LVL 6

Author Comment

by:Sid_F
ID: 40496157
All DC's are physical.
0
Get your Conversational Ransomware Defense e‑book

This e-book gives you an insight into the ransomware threat and reviews the fundamentals of top-notch ransomware preparedness and recovery. To help you protect yourself and your organization. The initial infection may be inevitable, so the best protection is to be fully prepared.

 
LVL 2

Expert Comment

by:FinServCo
ID: 40500816
So if you run a "net time /querysntp" on the server in question, it doesn't have any time sources configured?
0
 
LVL 6

Author Comment

by:Sid_F
ID: 40506698
Correct
0
 
LVL 15

Expert Comment

by:JBond2010
ID: 40508838
How many Domain Controllers are in your environment? Which Domain Controller is holding the PDC role? Domain Controllers update their time from the Domain Controller that is holding the PDC role - 1 of 5 FSMO roles in Active Directory.

On one of the Domain Controllers open the command prompt and type

netdom query fsmo

This will tell you which Domain Controller is holding the FSMO Roles.


Regards,

JBond2010
0
 
LVL 6

Author Comment

by:Sid_F
ID: 40512604
4 DC's I know which DC is holding the roles but it still doesn't shed any light on why the time sync fell out. thanks.
0
 
LVL 6

Accepted Solution

by:
Sid_F earned 0 total points
ID: 41014842
This issue has not reoccured
0
 
LVL 6

Author Closing Comment

by:Sid_F
ID: 41022657
Resolved
0

Featured Post

Tech or Treat!

Submit an article about your scariest tech experience—and the solution—and you’ll be automatically entered to win one of 4 fantastic tech gadgets.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

So you have two Windows Servers and you have a directory/folder/files on one that you'd like to mirror to the other?  You don't really want to deal with DFS or a 3rd party solution like Doubletake. You can use Robocopy from the Windows Server 200…
Scenerio: You have a server running Server 2003 and have applied a retail pack of Terminal Server Licenses.  You want to change servers or your server has crashed and you need to reapply the Terminal Server Licenses. When you enter the 16-digit lic…
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Please read the paragraph below before following the instructions in the video — there are important caveats in the paragraph that I did not mention in the video. If your PaperPort 12 or PaperPort 14 is failing to start, or crashing, or hanging, …
Suggested Courses

610 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question