Windows 10: Setting the NTP update frequency, with MinPollInterval/MaxPollInterval or SpecialPollInterval?

Hello,what is the currently recommended way to influence the NTP update frequency?Using the values MinPollInterval/MaxPollInterval or SpecialPollInterval?I found the following article about the latter:https://support.microsoft.com/en-us/help/2638243Has this been fixed in the meantime or is this still valid?However, I can't figure out the workaround, the MinPollInterval value should be changed, but to what?With the specified default values, the following conditional expression is resolved as follows: SpecialPollInterval<6144Does that mean, that as long as the SpecialPollInterval value is les

:)

 

Windows 7 can't sync its time with NTP server running on a Windows 10 PC

I am running an NTP server on a Windows 10 PC using the instructions at How to Create a Standalone NTP Server With Windows | Interface Technical Training. The w32tm query output on the server looks correct and shows the server is configured (see below), and the
W32time service is running.

-----------------------------------------------------

C:\WINDOWS\system32>w32tm /query /configuration

[Configuration]

EventLogFlags: 2 (Local)

AnnounceFlags: 10 (Local)

TimeJumpAuditOffset: 28800 (Local)

MinPollInterval: 10 (Local)

MaxPollInterval: 15 (Local)

MaxNegPhaseCorrection: 54000 (Local)

MaxPosPhaseCorrection: 54000 (Local)

MaxAllowedPhaseOffset: 1 (Local)

FrequencyCorrectRate: 4 (Local)

PollAdjustFactor: 5 (Local)

LargePhaseOffset: 50000000 (Local)

SpikeWatchPeriod: 900 (Local)

LocalClockDispersion: 10 (Local)

HoldPeriod: 5 (Local)

PhaseCorrectRate: 1 (Local)

UpdateInterval: 360000 (Local)

[TimeProviders]

NtpClient (Local)

DllName: C:\WINDOWS\system32\w32time.dll (Local)

Enabled: 1 (Local)

InputProvider: 1 (Local)

AllowNonstandardModeCombinations: 1 (Local)

ResolvePeerBackoffMinutes: 15 (Local)

ResolvePeerBackoffMaxTimes: 7 (Local)

CompatibilityFlags: 2147483648 (Local)

EventLogFlags: 1 (Local)

LargeSampleSkew: 3 (Local)

SpecialPollInterval: 32768 (Local)

Type: NTP (Local)

NtpServer: pool.ntp.org,0x9 (Local)

NtpServer (Local)

DllName: C:\WINDOWS\system32\w32time.dll (Local)

Enabled: 1 (Local)

InputProvider: 0 (Local)

AllowNonstandardModeCombinations: 1 (Local)

-----------------------------------------------------

But I cannot set the time on other PCs using that as the Internet time server, not by name nor ip address. The client can ping the server by name or ip address fine. There are no firewalls involved; the clients and server are connected to the same router.
When trying to synchronize, they get "An error occurred while Windows was synchronizing with xxxxx. This operation returned because the timeout period expired." Tried restarting server and service.

Has anyone tried this and gotten it to work?

 

unable to sync external NTP server in Ad environment.

Hi All,

can someone help me. there is a application in our production environment with multiple nodes in application cluster.

which has full dependency with w32tm service. if any of the server beyond 10sec from it's active node then, the application eliminate it from application cluster.

I have followed following support article still we the peer list is showing my domain controller. it is not desplaying my NTP server: -time.child.root.com

env details:-

The servers all are installed with windows 2008

All are part of Active directory Domain.

all are ESXI Vms not syncing Time from esxi group.

Configure an authoritative time - Windows Server

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

C:\Windows\system32>w32tm /query /configuration

[Configuration]

EventLogFlags: 2 (Local)

AnnounceFlags: 5 (Local)

TimeJumpAuditOffset: 28800 (Local)

MinPollInterval: 10 (Local)

MaxPollInterval: 15 (Local)

MaxNegPhaseCorrection: 3600 (Local)

MaxPosPhaseCorrection: 3600 (Local)

MaxAllowedPhaseOffset: 300 (Local)

FrequencyCorrectRate: 4 (Local)

PollAdjustFactor: 5 (Local)

LargePhaseOffset: 50000000 (Local)

SpikeWatchPeriod: 900 (Local)

LocalClockDispersion: 10 (Local)

HoldPeriod: 5 (Local)

PhaseCorrectRate: 1 (Local)

UpdateInterval: 30000 (Local)

[TimeProviders]

NtpClient (Local)

DllName: C:\Windows\system32\w32time.dll (Local)

Enabled: 1 (Local)

InputProvider: 1 (Local)

CrossSiteSyncFlags: 2 (Policy)

AllowNonstandardModeCombinations: 1 (Local)

ResolvePeerBackoffMinutes: 15 (Policy)

ResolvePeerBackoffMaxTimes: 7 (Policy)

CompatibilityFlags: 2147483648 (Local)

EventLogFlags: 0 (Policy)

LargeSampleSkew: 3 (Local)

SpecialPollInterval: 3600 (Policy)

Type: NT5DS (Policy)

NtpServer (Local)

DllName: C:\Windows\system32\w32time.dll (Local)

Enabled: 1 (Local)

InputProvider: 0 (Local)

AllowNonstandardModeCombinations: 1 (Local)

VMICTimeProvider (Local)

DllName: C:\Windows\System32\vmictimeprovider.dll (Local)

Enabled: 1 (Local)

InputProvider: 1 (Local)

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

C:\Windows\system32>w32tm /query /source

DC21.child.root.com

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

C:\Windows\system32>w32tm /query /peers

#Peers: 1

Peer: DC21.child.root.com

State: Active

Time Remaining: 896.3444743s

Mode: 1 (Symmetric Active)

Stratum: 4 (secondary reference - syncd by (S)NTP)

PeerPoll Interval: 17 (out of valid range)

HostPoll Interval: 10 (1024s)

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

C:\Windows\system32>w32tm /query /status

Leap Indicator: 0(no warning)

Stratum: 5 (secondary reference - syncd by (S)NTP)

Precision: -6 (15.625ms per tick)

Root Delay: 0.1250000s

Root Dispersion: 8.0002952s

ReferenceId: 0x0A780A15 (source IP: 10.120.10.21)

Last Successful Sync Time: 21/02/2019 12:54:18

Source: DC21.child.root.com

Poll Interval: 10 (1024s)

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

C:\Windows\system32>w32tm /config /syncfromflags:manual /manualpeerlist:"0.time.

child.root.com"

The command completed successfully.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

C:\Windows\system32>w32tm /query /status

Leap Indicator: 0(no warning)

Stratum: 5 (secondary reference - syncd by (S)NTP)

Precision: -6 (15.625ms per tick)

Root Delay: 0.1250000s

Root Dispersion: 8.0002952s

ReferenceId: 0x0A780A15 (source IP: 10.120.10.21)

Last Successful Sync Time: 21/02/2019 12:54:18

Source: DC21.child.root.com

Poll Interval: 10 (1024s)

 

NTP Help

Hi guys, I know this is not the site for bull**** networking but you've been the most reliable tech site I've ever been on for any computer stuff. So I've got a question about a network. I'm with the Marines, and we're running secure networks branching off from everywhere. I mean I'm in Japan right now. But we're trying to sync our hardware (Cisco devices, switches and routers) to NTP. I created a test setup with a router, easy as pie to sync that, but it was a direct connection from the router to our linksys gateway directly to the ISP. But in the real setup, we pull NTP data on every piece of hardware I set up to sync...we just don't sync. "Show NTP associations" shows full reach, stratum 3 servers all working perfect but our offsets are off (I'd love to know what the numbers for offset mean), but show ntp status shows no synchronization, not even a hint that it realizes it's got a working NTP server to pull off of. NTP is supposed to be an easy setup, but for over a month now myself and everyone I know have tried everything from our end to get a sync and we got nothing. Maybe it's not close enough to the NTP time, so we set the time and timezone a billion times, nothing there. I'm assuming since we can pull data from NTP servers, the port's gotta be open right? If it's impossible to sync because somewhere along the way a firewall is blocking it's UDP port, that's totally cool, then I'll have an excuse as to why we're gonna have to manually set clocks. But the fact that it pulls information (diagnostics at least, ping, offset, freq, stratum) I feel like we should be able to pull time, we just can't for some reason. If you guys have any idea what I can do please let me know. Thank you