The event description

The format and contents of the event description vary, depending on the event type. The description is often the most useful piece of information, indicating what happened or the significance of the event.

The event logs record five types of events:

Event typeDescription


A significant problem, such as loss of data or loss of functionality. For example, if a service fails to load during startup, an Error will be logged.


An event that is not necessarily significant, but may indicate a possible future problem. For example, when disk space is low, a Warning will be logged.


An event that describes the successful operation of an application, driver, or service. For example, when a network driver loads successfully, an Information event will be logged.

Success Audit

An audited security access attempt that succeeds. For example, a user's successful attempt to log on the system will be logged as a Success Audit event.

Failure Audit

An audited security access attempt that fails. For example, if a user tries to access a network drive and fails, the attempt will be logged as a Failure Audit event.


If used, the optional data field contains binary data, which can be displayed in bytes or words. This information is generated by the program that was the source of the event record. The data appears in hexadecimal format. Its meaning can be interpreted by a support technician familiar with the source program.

When viewing an application or system log on a LAN Manager 2.x server, only the date, time, source, and event ID are shown. When viewing a security log on a LAN Manager 2.x server, only the date, time, category, user, and computer are shown.

For more information, see:

Related Topics

View more details about an event 

Archive an event log 

Set event logging options 

The event header 

Setting options for logging events 

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