Event ID: 50
The time service detected a time difference of greater than 5000 milliseconds for 900 seconds. The time difference might be caused by synchronization with low-accuracy time sources or by suboptimal network conditions. The time service is no longer synchronized and cannot provide the time to other clients or update the system clock. When a valid time stamp is received from a time service provider, the time service will correct itself.
In the default domain hierarchy, when a Microsoft Windows Server 2003-based child domain controller tries to synchronize the time, you may receive the following event messages:
Event ID: 38
The time provider NtpClient cannot reach or is currently receiving invalid time data from yourpdc.forestroot.com (ntp.d|220.127.116.11:123->18.104.22.168:123).
Event ID: 47
Time Provider NtpClient: No valid response has been received from manually configured peer yourpdc.forestroot.com after eight attempts to contact it. This peer will be discarded as a time source, and NtpClient will attempt to discover a new peer with this DNS name.
Event ID: 29
The time provider NtpClient is configured to acquire time from one or more time sources. However, none of the sources are currently accessible. No attempt to contact a source will be made for 15 minutes. NtpClient has no source of accurate time.