Das Problem habe ich schonmal woanders hier im Forum beschrieben. Der Zeitdinest kann auf einem DC ein Problem haben: er blockiert sich selbst ! 
  
Dazu : 
  
SYMPTOMS 
The W32tm command is used to test and maintain time synchronization between workstations and servers in an enterprise. If you use the command on a Windows 2000 domain controller, you may receive an error message in the output of the command if you are using the -v switch for verbose output and\or the following error message may be logged in the System Event log:  
Error Message at Command Prompt 
  
  
============================== 
(previous lines removed) 
W32Time: Server: Binding to 1 NIC. 
W32Time: bind failed: 0x80072740 
W32Time: 0xC0000031 reported to System Log in Event Viewer 
W32Time: BEGIN:FinishCleanup 
W32Time: BEGIN:TsUpTheThread 
W32Time: END Line 1384 
W32Time: BEGIN:UnInitializeDC 
W32Time: Ptrs 0 - 0 
W32Time: END:Line 725 
W32Time: Time service stopped. 
W32Time: END:Line 383  
Error Message in the Event Log 
  
  
============================== 
Event Type: Error 
Event Source: w32time 
Event Category: None 
Event ID: 49 
Date: xx/xx/2000 
Time: 10:49:44 AM 
User: N/A 
Computer: machinename 
Description: 
An unexpected error occurred while trying to start the server. 
The port may already be in use.  
Data: 
0000: 00 00 00 00 ....  
The W32tm Command Generates the Following Error Message 
  
  
RPC to server -v returned 0x6ba  
CAUSE 
This problem can occur on a domain controller (DC) when the default port (123) is already in use by the Time service that is running on the DC before the command is executed. The W32tm command tries to start the Time service before execution, but it does work if the service is already started.  
RESOLUTION 
To resolve this problem, note that the following command switches for W32tm execute successfully:  
-tz 
-adj 
-adjoff 
-s 
To successfully use the W32tm command on a DC with the other options, use one or more of the following steps:  
Stop the Time service to execute the command, and then restart the service. 
Change the port by using the -p switch to execute the W32tm command on a DC. 
  
Also : 
  
net stop w32time 
w32tm -once 
net start w32time 
  
  
oder einmal : 
  
w32tm -once -adjoff 
  
mfg Beginner