Use the following commands to synchronize time in a workgroup environment or with a non-Windows time server by adding 0x8 parameter:

  • w32tm /config /manualpeerlist:TimeServerFQDNorIPAddress,0x8 /syncfromflags:MANUAL
  • w32tm /config /update
  • net stop w32time
  • net start w32time
  • w32tm /resync

Source KB: http://support.microsoft.com/kb/875424