Windows time synchronization interval

My environment is Windows 2003 activity directory Single Domain multi-site architecture, my site has a domain controller and multiple member servers;
The current situation is that on my Member Server, If I modified the time and run w32tm/resync through the command line, the time can be automatically synchronized with the domain controller. If I do not perform any operation, it takes about one and a half hours for the member server to synchronize time with the domain controller. The default value of SpecialPollInterval under my registry HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ TimeProviders \ NtpClient \ On the Member Server is 3600, I tried to change the key value to 30, then run w32tm/config/update, net stop w32time, net start w32time, and then modify the Member Server time again, waiting... it still takes more than one hour to synchronize time. How can I shorten the synchronization interval? Thank you.
A: According to your description, my understanding of this problem is: in Windows 2003 single-domain environment, it takes more than one hour for a Member Server to synchronize time.
First, I want to confirm with you: "If I do not perform any operation, it takes about one and a half hours for the member server to synchronize time with the domain controller ", you mean to manually change the time of the member server to another one, and then it will take one hour to re-synchronize with the DC?
Based on my experience, I suspect that the problem is caused by time source. Therefore, we recommend that you first set the problem as follows:

Step 1: Configure PDC as time source
1. Start-run, type regedit, and OK.
2. Find the Registry path:
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ Config \ AnnounceFlags
3. Right-click AnnounceFlags and select modify.
4. Edit the DWORD Value, type A, and OK.
5. Exit the registry.
6. Run cmd. In the command line dialog box, type the following command to restart Windows Time service and press Enter:
Net stop w32time & net start w32time
Step 2: configure the time synchronization between the member server and PDC:
1. Start-run. Type cmd to open the command line window.
2. Enter the following command and press Enter.
W32tm/config/syncfromflags: domhier/update
Net stop w32time
Net start w32time
After this setting, check whether there are any problems. If the problem persists, please tell me your specific test method for further testing.
First, the system time can be modified only by the local administrator group by default, so SpecialPollInterval is the default value of 3600. I only want to ask if you have encountered any specific problems? Or in what ways do you Want to modify the default value?
To make the configured SpecialPollInterval take effect, set the key value SpecialInterval under the registry subkey HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ Parameters to 0x1.
To shorten the default time interval, we recommend that you modify the following registry key values:

1. Make sure that the key values of MaxPosPhaseCorrection and MaxNegPhaseCorrection under the subkey HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ Config are both 0 xffffffffff and the type is DWORD.
2. Set the value of MaxPollInterval under HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ Config to 10.
Check whether the synchronization time is shortened. For more information, see the following documents:
How to configure the Windows Time service against a large time offset
Http://support.microsoft.com/kb/884776
Kevin Su
For more information about Windows time synchronization interval, see
Windows time synchronization interval
AD Time Synchronization Principle Analysis
Time synchronization server
Windows 2008 time service configuration
--- Gnaw0725
Author "activity directory SEO"