在今天的帖子中，我们将确定使用SpecialPollInterval作为轮询间隔时的原因，如果服务进入Spike状态， ^(Spike)Windows 时间服务会显示不正确的时间- 然后为Windows 10 NTP客户端中的问题提供可能的缓解措施。

网络时间协议( NTP)^{(Network Time Protocol (NTP))}是一个客户端/服务器应用程序。每个工作站、路由器或服务器都必须配备NTP客户端软件，以将其时钟与网络时间服务器同步。^{(synchronize its clock)}在大多数情况下，客户端软件已经驻留在每个设备的操作系统中。

典型的NTP客户端会定期轮询一个或多个NTP服务器。

NTP客户端显示不正确的Windows 时间^{(Windows Time)}服务

如果运行Windows Server版本或Windows Client版本的^{(Windows Client)}NTP客户端计算机在满足以下条件时可能无法更正时间，您可能会遇到此问题：

• NTP客户端将其时间与手动指定的NTP服务器同步。
• NTP客户端使用SpecialPollInterval作为^{(SpecialPollInterval)}轮询间隔。
• NTP客户端和NTP服务器之间的时间偏移量大于NTP客户端中配置的LargePhaseOffset。

在这种情况下，NTP客户端即使在等待SpikeWatchPeriod过去后也无法更正其时间。

NTP客户端显示不正确的Windows 时间^{(Windows Time)}服务的原因

发生此问题的原因是NTP客户端每次将时间样本轮询到NTP服务器时都会进入SPIKE状态。时间^(Time)服务管理其内部状态，如果客户端进入SPIKE状态，客户端不会同步其时间。

有两种方法可以解决此问题，以便在SPIKE状态后启用NTP客户端与NTP服务器同步，将Windows 时间^{(Windows Time)}配置为使用MinPollInterval/MaxPollInterval作为轮询间隔。

1] 要手动配置^{(1] To manually configure)}Windows时间^(Time)以使用MinPollInterval/MaxPollInterval作为轮询间隔，请执行以下操作：

启动命令提示符

在命令提示符处，复制并粘贴下面的命令（将NTP_server_IP_Address占位符替换为实际的服务器 IP 地址），然后按 Enter^(Enter)。

w32tm /config /update /manualpeerlist:NTP_server_IP_Address,0x8 /syncfromflags:MANUAL

当您将0x1标志与/manualpeerlist开关一起使用时，您指定使用 SpecialPollInterval。要变通解决此问题，请不要使用 0x1 标志。

Windows时间^(Time)使用的轮询间隔由以下注册表子项设置：

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters

请参阅有关Windows 时间服务^{(Windows Time Service)}和注册表值的其他信息。^{(additional information)}

2] 要自动配置^{(2] To auto-configure)}Windows时间^(Time)以使用MinPollInterval/MaxPollInterval作为您的轮询间隔，请下载MicrosoftEasyFix25001.mini。

此工具可能只有英文版^(English)。但是，自动修复也适用于其他语言版本的Windows。

如果您不在出现问题的计算机上，请将 Easy Fix 解决方案保存到闪存驱动器或 CD，然后在出现问题的计算机上运行它。

PS：Windows 10 时钟时间错误？这是工作修复！

NTP client shows incorrect Time on Windows 10

In today’s post, we will identify the cause when SpecialPollInterval is used as a polling interval, the Windows Time Service shows incorrect time if the service gets into Spike state – and then provide the possible mitigation for the issue in Windows 10 NTP client.

The Network Time Protocol (NTP) is a client/server application. Each workstation, router, or server must be equipped with NTP client software to synchronize its clock to the network time server. In most cases, the client software is already resident in the operating system of each device.

A typical NTP client regularly polls one or more NTP servers.

NTP client shows incorrect Windows Time service

You may experience this issue, if an NTP client computer that is running Windows Server editions or Windows Client editions may not correct the time if the following conditions are true:

• The NTP client syncs its time with the manually specified NTP server.
• The NTP client uses SpecialPollInterval as a polling interval.
• The time offset between the NTP client and the NTP server is greater than the LargePhaseOffset as configured in the NTP client.

In this scenario, the NTP client cannot correct its time even after waiting for SpikeWatchPeriod to pass.

Cause of NTP client shows incorrect Windows Time service

This problem occurs because the NTP client gets into SPIKE state every time the client polls the time sample to the NTP server. The Time service manages its internal status, and if the client gets into SPIKE state, the client does not sync its time.

There are two ways to resolve this issue so that the NTP client is enabled to sync with the NTP server after a SPIKE state, configure Windows Time to use the MinPollInterval/MaxPollInterval as the polling interval.

1] To manually configure Windows Time to use the MinPollInterval/MaxPollInterval as the polling interval, do the following:

Launch Command Prompt

At the command prompt, copy and paste the command (substitute the NTP_server_IP_Address placeholder with the actual server IP address) below and hit Enter.

w32tm /config /update /manualpeerlist:NTP_server_IP_Address,0x8 /syncfromflags:MANUAL

When you use the 0x1 flag with the /manualpeerlist switch, you specify the use of SpecialPollInterval. To work around this problem, do not use the 0x1 flag.

The polling interval that Windows Time uses is set by the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters

See additional information about the Windows Time Service and registry values.

2] To auto-configure Windows Time to use the MinPollInterval/MaxPollInterval as the polling interval for you, download MicrosoftEasyFix25001.mini.

This tool may be in English only. However, the automatic fix also works for other language versions of Windows.

If you’re not on the computer that has the problem, save the easy fix solution to a flash drive or a CD, and then run it on the computer that has the problem.

PS: Windows 10 Clock Time wrong? Here is the working fix!

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