Event ID - 11

Event Id11
Sourcew32time
DescriptionThe NTP <DCName.domain_name.com> didn't respond.
Event InformationCause:
This event usually occurs when there is not NTP (Network Time Protocol) server configured in the network. To see the currently configured time server use the following command:

net time /querysntp

If there is a time server configured, then there may be a firewall that stops the server reporting the error from connecting to the NTP server.
Reference LinksResolution:
A List of the Simple Network Time Protocol Time Servers That Are Available on the Internet

Basic Operation of the Windows Time Service

How to Configure an Authoritative Time Server in Windows 2000

Configuring the Time Service to Log When the Time Is Changed

HOW TO: Configure the Simple Network Time Protocol (SNTP) on ISA Server

ISA Server Forum

Clients Cannot Join a Domain with Norton Internet Security 2002

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