To change the interval that Windows updates the time using the internet time servers navigate to:

1. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\W32Time\Tim eProviders\NtpClient

2. Select "SpecialPollInterval"

3. Change decimal value from 604800 to some other
   value in seconds. EX: 172800 (2 days)

Originally posted by Taylor Spencer