Windows useful commands to troubleshoot time issues

  • w32tm /query /status (see source and ReferenceId, in AD output should NOT be “Source: Local CMOS Clock” or “VM IC Time Synchronization Provider”, nor “Free-running System Clock” – maybe need to run below two commands)
  • net time /set
  • net stop/start w32time
  • to compare time on DCs for small companies with only several AD DCs – for example from powershell: “net time \\dc00″,”net time \\dc01″,”net time \\dc02″,”net time \\dc03″,”net time \\dc04” | ForEach-Object {cmd.exe /c $_}
  • for PDC emulator role:       
  • w32tm /config / /syncfromflags:manual /reliable:yes /update
  • to reset computer time settings in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters:
  • net stop w32time
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