Hi Simon, Form the look of your scheduled task the service is being started every hour and forced to resync. If you are using windows 7 the service will then idle and stop causing the time to begin drifting again. If the sync source is difficult to contact this is likely to fail which will then not update the time. I suggest you follow the instructions from my earlier post to simon, Hope this helps, John-Micheal Hi Simon,
Our machines use the windows time service modified to a more aggressive synchronization pattern. To do this you will need to run the following commands in an Admin command window. You could also save this into a batch file (.bat) and run that as admin on as many machines as required. Hope this helps, John-Michael ECHO Add Time Service registry entries. REG ADD HKLM\SYSTEM\ControlSet001\Services\List /v "123:UDP" /t REG_SZ /d "123:UDP:*:Enabled:NTP Time Service" /f REG ADD HKLM\SYSTEM\CurrentControlSet\Services\W32Time /v "Start" /t REG_DWORD /d "00000384" /f REG ADD HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient /v "Enabled" /t REG_DWORD /d "00000001" /f REG ADD HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient /v "SpecialPollInterval" /t REG_DWORD /d "00000384" /f REG ADD HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters /v "NtpServer" /t REG_SZ /d "ntp2d.mcc.ac.uk,0x9" /f reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers /v 1 /t REG_SZ /d ntp2d.mcc.ac.uk /f reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers /v 2 /t REG_SZ /d ntp.cis.strath.ac.uk /f reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers /v 3 /t REG_SZ /d time.windows.com /f reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers /v 4 /t REG_SZ /d time.nist.gov /f reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers /v 5 /t REG_SZ /d time-nw.nist.gov /f reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers /v 6 /t REG_SZ /d time-a.nist.gov /f reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers /v 7 /t REG_SZ /d time-b.nist.gov /f ECHO Set Service Control For Windows Time Service to When Network Interface Active and restart service. sc triggerinfo w32time start/networkon stop/networkoff Net Start w32time
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