Configuring PDC Windows Time to sync to External source

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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