This documentation is archived and is not being maintained.

AuditLogLocation Enumeration

Specifies the location where security-related event logs are written.

Namespace:  System.ServiceModel
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

public enum AuditLogLocation

Member nameDescription
DefaultSpecifies the default location, which is determined by the operating system. If writing to the Security log is supported (such as on and and later platforms), the default log location is the Security log. Otherwise (such as in ), the default log location is the Application log.
ApplicationSpecifies the Application log in the event log.
SecuritySpecifies the Security log in the event log. The calling thread must have SeAuditPrivilege to be able to write to the Security log.

When creating a application that requires authentication and/or authorization of callers, you can specify that events related to security be recorded for either success, failure, or both. The location of the log is determined by this enumeration.

The level of the audit log is specified by setting the MessageAuthenticationAuditLevel or the ServiceAuthorizationAuditLevel property of the ServiceSecurityAuditBehavior class to one of the AuditLevel values.

You can also specify audit behavior using the serviceSecurityAudit element binding.

Important noteImportant

If the AuditLogLocation property is set to Security and Audit Object Access is not set in the Local Security Policy, audit events will not be written to the Security log. No failure is returned, but audit entries will not be written to the Security log. In addition, the calling thread must have SeAuditPrivilege to be able to write to the Security log.

Default Dependent on Operating System

When setting the property to the Default value, the operating system determines which log will actually be written to. For more information, see Auditing Security Events.

The following example sets the AuditLogLocation property to one of the AuditLogLocation values.

public static void Main()
    // Get base address from appsettings in configuration.
    Uri baseAddress = new Uri(ConfigurationManager.

    // Create a ServiceHost for the CalculatorService type 
    // and provide the base address.
    using (ServiceHost serviceHost = new 
        ServiceHost(typeof(CalculatorService), baseAddress))
        // Create a new auditing behavior and set the log location.
        ServiceSecurityAuditBehavior newAudit = 
            new ServiceSecurityAuditBehavior();
        newAudit.AuditLogLocation = 
        newAudit.MessageAuthenticationAuditLevel = 
        newAudit.ServiceAuthorizationAuditLevel = 
        newAudit.SuppressAuditFailure = false;
        // Remove the old behavior and add the new.
        // Open the ServiceHostBase to create listeners 
        // and start listening for messages.

        // The service can now be accessed.
        Console.WriteLine("The service is ready.");
        Console.WriteLine("Press <ENTER> to terminate service.");

        // Close the ServiceHostBase to shutdown the service.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.