On one member server I saw a Root Dispersion of about 4 seconds when running w32tm /query /status which concerns me slightly, so I want to find out what it means windowsserver08r2 w32time Share Improve this question Follow asked Jan 29 '14 at 1103 MrVimes MrVimesThe current status of the time service can be obtained via w32tm /query /status /verbose it should give you some details about the status of your local clock, the deviation at the last sync and the precision According to your logged events, your local clock seems to # verify status PS C\Users\Administrator> w32tm /query /status Leap Indicator 0(no warning) Stratum 4 (secondary reference syncd by (S)NTP) Precision 23 (1199ns per tick) Root Delay s Root Dispersion s ReferenceId 0x85F3EEF3 (source IP ) Last Successful Sync Time PM Source ntp
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W32tm /query /status precision
W32tm /query /status precision- If you need something superprecise, you should have a look at PTP (precision time protocol), but I doubt you need submicrosecond precisionw32tm the Windows Time service (by default) checks time about every 9 hours ( 2 to the 15th power = 32,768 seconds) from w32tm /query /status After this command you will see result Leap Indicator 0(no warning) Stratum 2 (secondary reference – syncd by (S)NTP) Precision 6 (ms per tick) Root Delay s Root Dispersion s ReferenceId 0xD8E500 (source IP PDC IP address) Last Successful Sync Time 949 Source PDC FQDN,0x1
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Time /T outputs the current system timeW32tm /query /peers w32tm /query /status w32tm /query /configuration w32tm /query /source I configured the PDC to sync to external sources and made sure it was set to be a reliable source Example NTP peer list for a PDCThe target system must be no further than stratum 5 from a highly accurate time source
To see the stratum of a client, use w32tm /query /status Critical Factors for Accurate Time In every case for accurate time, there are three critical factors Solid Source Clock The source clock in your domain needs to be stable and accurate This usually means installing a GPS device or pointing to a Stratum 1 source, taking #3 into accountPosted (3 days ago) W32tmexe is the preferred commandline tool for configuring, monitoring, or troubleshooting the Windows Time service w32tm /query /status gives you information such as stratum leap indicator precision last sync NTP server › Images detail wwwwindowstechnocom Preview site Show All Images PS C\Windows\system32> w32tm /query /status Leap Indicator 0(no warning) Stratum 1 (primary reference syncd by radio clock) Precision 6 (ms per tick) Root Delay s Root Dispersion s ReferenceId 0x4C4F434C (source name "LOCL") Last Successful Sync Time PM Source Local CMOS Clock Poll
C\Users\AdministratorMHG>w32tm /query /status Leap Indicator 0(no warning) Stratum 1 (primary reference syncd by radio clock) Precision 6 (ms per tick) Root Delay s Root Dispersion s ReferenceId 0x4C4F434C (source name "LOCL") Last Successful Sync Time 0621 Source Local CMOS Clock PollEn la línea de comandos, escriba w32tm /query /configuration w32tm /query /status Time /T w32tm /query /configuration le da la configuración que ha configurado w32tm /query /status le proporciona información como estratoThen I run a w32tm /query /status and generally get something like this as a response Two completely different domains and servers respond with the source Local CMOS Clock Leap Indicator 0 (no warning) Stratum 1 (primary reference syncd by radio clock) Precision 6 (ms per tick) Root Delay s Root Dispersion s
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Executing the command "w32tm /query /status" in a command prompt gives you the following information This is in most scenarios more than sufficient C\Users\user>w32tm /query /status Leap Indicator 0(no warning) Stratum 6 (secondary reference – syncd by (S)NTP) Precision 6 (ms per tick) Root Delay s Root Dispersion BUT when I ran w32tm /query /status, the response was Leap Indicator 3(not synchronized) Stratum 1 (primary reference syncd by radio clock) Precision 23 (1199ns per tick) Root Delay s Root Dispersion s ReferenceId 0x564D5450 (source name "VMTP") Last Successful Sync Time PM Source VM IC Time w32tm /resync Sending resync command to local computer The computer did not resync because no time data was available w32tm /query /status /verbose Leap Indicator 3(not synchronized) Stratum 0 (unspecified) Precision 23 (1199ns per tick) Root Delay s Root Dispersion s ReferenceId 0x (unspecified)
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A new time provider plugin vmwTimeProvider is provided for Microsoft Windows native time synchronization service 'W32Time' running inside vSphere VMs The plugin interacts with precision clock virtual device to provide underlying ESXi host time, as an alternative to NTP and Active Directory based time sources C\Users\Administrator>w32tm /query /status Leap Indicator 0(no warning) Stratum 4 (secondary reference syncd by (S)NTP) Precision 23 (1199ns per tick) Root Delay s Root Dispersion s ReferenceId 0xBC (source IP ) Last Successful Sync Time PM Source Note Run w32tm /query /status from the command line to see the stratum Target Accuracy 1 Millisecond requirements The target computer must have better than 01 ms of network latency between its time source;
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I'm running build and w32tm /query /status returned minwinpc PS C\Users\Administrator\Documents> w32tm /query /status Leap Indicator 3(last minute has 61 seconds) Stratum 0 (unspecified) Precision 6 (ms per tick) Root Delay s Root Dispersion s ReferenceId 0x (unspecified) Then I start the W32Time (Windows Time) service because the w32tm command requires it As you can see, all parts of the code that can possibly generate an exception are enclosed in Try / Catch block because I do not want to stop the execution of the script, and I want to have information about any exception in the ErrorEvents property of the Run "w32tm /query /status" from the command line to see the stratum The target system must be within 6 or less network hops from the highly accurate time source The oneday average CPU utilization on all stratums must not exceed 90% For virtualized systems, the oneday average CPU utilization of the host must not exceed 90%
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C\Users\Administratorxxxxx>w32tm /config /manualpeerlistinpoolntporg The command completed successfully C\Users\Administratorxxxxx>w32tm /query /status Leap Indicator 0(no warning) Stratum 1 (primary reference syncd by radio clock) Precision 6 (ms per tick) Root Delay s Root Dispersion s w32tm /query /configuration w32tm /query /status Time /T w32tm /query /configuration gives you the configuration you have set up w32tm /query /status gives you information such as stratum; 1 We can query the time source on PDC Type the command of w32tm /query /souce Click Enter to see if the time source on the PDC is the external NTP time source 2 We use the following command to view the time precision on the PDC and NTP time source when PDC fails to sync time with NTP time source
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Here are the Output of the command w32tm /query /status Jump indicator 0 (no warning) stratum 1 (primary reference synchron via radio clock) Precision 6 (ms per tick) stem delay s stem deviation s Reference ID 0x4C4F434C (source name "LOCL") Last successful synchronization time SourceBetter use "status" option w32tm /query /status Leap Indicator 0(no warning) Stratum 5 (secondary reference syncd by (S)NTP) Precision 6 (ms per tick) Root Delay s Root Dispersion C\Program Files\VMware\VMware Tools>w32tm /query /source Local CMOS Clock C\Program Files\VMware\VMware Tools>w32tm /query /peers #Peers 0 C\Program Files\VMware\VMware Tools>w32tm /query /status Leap Indicator 0(no warning) Stratum 1 (primary reference syncd by radio clock) Precision 6 (ms per tick) Root Delay
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Time synchronization is an important aspect for all computers on the network By default, the client's computers get their time from a Domain Controller and the Domain Controller gets his time from the domain's PDC Operation Master Therefore the PDC must synchronize his time from an external source w32tm /query /status You can also see what peers (sources) it is set for by using the command w32tm /query /peers In this instance, its source is "Freerunning System Clock" If it is in this state or "Local CMOS clock" and the machine exists as a virtual machine on VMware ESXi or Microsoft HyperV then it may be temporaryI then ran w32tm /query /status and I'm getting Local CMOS Clock This has happened to me before, so I can confirm that your pain is real In all honesty, I don't know what's going on I started rebooting and resubmitting the same commands and whatnot and it finally worked
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Configuration via command prompt net stop w32time w32tm / config /manualpeerlist0trpoolntporg / syncfromflags MANUAL (0trpoolntporg is preferred here) net start w32time Finally, let's check out the change It is seen that the change is reflected in the source section as follows w32tm / query / statusEastcolodc2 w32tm /query /status Leap Indicator 0(no warning) Stratum 2 (secondary reference syncd by (S)NTP) Precision 6 (ms per tick) Root Delay s Root Dispersion s ReferenceId 0x808A8DAC (source IP ) Last Successful Sync Time PM Source timenistgov,0x1 Poll Interval 6 Using W32tmexe You can use the commandline tool W32tmexe to configure Windows Time service settings and to diagnose computer time problems W32tmexe is the preferred commandline tool for configuring, monitoring, and troubleshooting the Windows Time service W32tmexe is included with Windows XP and later and Windows Server 03 and later
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I can confirm that the clients are seeing and seeking the domain controller (s) for the time with w32tm /query /status Leap Indicator 0 (no warning) Stratum 13 (secondary reference syncd by (S)NTP) Precision 23 (1199ns per tick) Root Delay s Root Dispersion s ReferenceId 0xC0A80AD4 (source IP C\>w32tm /query /peers #Peers 1 Peer State Pending Time Remaining s Mode 0 (reserved) Stratum 0 (unspecified) PeerPoll Interval 0 (unspecified) HostPoll Interval 0 (unspecified) C\>w32tm /query /status Leap Indicator 3(last minute has 61 seconds) Stratum 0 (unspecified) Precision 6 (ms per tick) Root Delay s W32tmexe is the preferred commandline tool for configuring, monitoring, or troubleshooting the Windows Time service w32tm /query /status gives you information such as stratum leap indicator precision last sync NTP server poll interval So, that's all in this blog
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The w32tm /query /status command also shows the machine's time source, as well as other potentially useful information The /verbose switch provides even more information As with the first command, these switches are only available on machines running Windows Vista or laterFrom an Admin command prompt w32tm /query /configration will confirm if the PTP client is setup In particular we are looking for any entry that shows the PtpClient section and the correct dll From an Admin command prompt w32tm /query /status /verbose will show if I can't get another DC to get time from PDC When I run this w32tm /query /status it says Leap Indicator 3(last minute has 61 secon Stratum 0 (unspecified) Precision 6 (ms per tick) Root Delay s Root Dispersion s ReferenceId 0x (unspecified) Last Successful Sync Time unspecified Source Local CMOS Clock
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w32tm / config / syncfromflags DOMHIER / update w32tm / resync / nowait net stop w32time && net start w32time Check settings after a minute, it should show your PDC/Time Server w32tm / query / status Once the commands above were executed in all DCs, check the NTP settings for them with the command below w32tm / monitor
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