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KerberosRequestorSecurityToken Constructor (String)

Initializes a new instance of the KerberosRequestorSecurityToken class using a service that is associated with the specified service principal name.

Namespace:  System.IdentityModel.Tokens
Assembly:  System.IdentityModel (in System.IdentityModel.dll)

public KerberosRequestorSecurityToken(
	string servicePrincipalName


Type: System.String

The service principal name for the KerberosRequestorSecurityToken security token. Sets the ServicePrincipalName property.


servicePrincipalName is null.


A Kerberos ticket cannot be obtained for the current user.

The service principal name must be in one of the following formats: host/<hostname>@<domain> or <hostname>, where hostname is the name of the computer hosting the target Web service and domain is the fully-qualified domain name of the Kerberos realm in which the host computer resides. The service principal name is associated with an account that is running the service and this mapping is stored in the Kerberos Domain Controller (KDC).

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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