Computer Clocks synchronization

425 pts.
Tags:
Clock Synchronization
Microsoft Windows Server 2003
Microsoft Windows XP
Windows XP Professional
We have about 60 PCs in our high school, running Win XP Pro with a win 2003 Server. Virtually all of the computers' clock times are 10 minutes slow. If they're changed, they revert back almost immediately. On most PCs this isn't much of an issue, but tardy students are getting away with being 10 minutes late (IDs are scanned) and this has become a big problem for me. Any suggestions? Thanks

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What is the DC synchronizing it’s time to? That is what is controlling the time on the PCs

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  • Dwiebesick
    To expand on what Technochic said: You really need to provide the information she asked you for, here is some background on basic time service. Each workstation and server in this network will try to locate a time source for synchronization. Using an internal algorithm designed to reduce network traffic, systems will make up to six attempts to find a time source. Here's a look at the order of these attempts: • Parent domain controller (on-site) • Local domain controller (on-site) • Local PDC emulator (on-site) • Parent domain controller (off-site) • Local domain controller (off-site) • Local PDC emulator (off-site) To ensure that your servers are finding the proper time, you must configure your PDC emulator to receive the time from a valid and accurate time source. To configure this role, follow these steps: 1. Log on to the domain controller. 2. Enter the following at the command line: W32tm /config /manualpeerlist:time-b.nist.gov /syncfromflags:manual Or you can use time-a.nist.gov, nist.netservicesgroup.com, time-a.timefreq.bldrdoc.gov. 3. Update the Windows Time Service configuration. At the command line, you can either enter W32tm /config /update, or you can enter the following: Net stop w32time Net start w32time If a system isn't a member of a domain, you must manually configure it to synchronize with a specified time source. Follow these steps: 1. Go to Start | Control Panel, and double-click Date And Time. 2. On the Internet Time tab, select a time server from the drop-down list, or enter the DNS name of your network's internal time source. 3. Click Update Now, click Apply, and click OK. Note: It's important to make sure that any access control lists on your network allow UDP port 123 to and from systems to the selected time source. For more information, see Microsoft's Windows Time Service Tools and Settings documentation.
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  • Britinga
    Thank you for the suggestions. The server is part of a domain; I'll follow the steps and post an update.
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  • Britinga
    Success. I followed the command line directions, reset the DC clock, and so far all computers are showing the correct time. Thank you so much for your help.
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