For configuring PDC to sync the clock with external reliable Time source
Folowing registry keys needs to be edited:
1. HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\Type
Change NT5DS to NTP
2.
HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config\AnnounceFlags
Change 10 to 5
3.
HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\NtpServer
add the reliable time sources ,for example:
time.windows.com,0x1
tock.usno.navy.mil,0x1
4.
Stop time service & start again
net stop w32time
net start w32time
if you don’t want to wait for time convergence
w32tm /resync /rediscover
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