Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
AuthenticationManager Class
Collapse the table of content
Expand the table of content

AuthenticationManager Class

Manages the authentication modules called during the client authentication process.


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

type AuthenticationManager =  class end

The AuthenticationManager type exposes the following members.

Public propertyStatic memberCredentialPolicyGets or sets the credential policy to be used for resource requests made using the HttpWebRequest class.
Public propertyStatic memberCustomTargetNameDictionaryGets the dictionary that contains Service Principal Names (SPNs) that are used to identify hosts during Kerberos authentication for requests made using WebRequest and its derived classes.
Public propertyStatic memberRegisteredModulesGets a list of authentication modules that are registered with the authentication manager.

Public methodStatic memberAuthenticateCalls each registered authentication module to find the first module that can respond to the authentication request.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodStatic memberPreAuthenticatePreauthenticates a request.
Public methodStatic memberRegisterRegisters an authentication module with the authentication manager.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodStatic memberUnregister(IAuthenticationModule)Removes the specified authentication module from the list of registered modules.
Public methodStatic memberUnregister(String)Removes authentication modules with the specified authentication scheme from the list of registered modules.

AuthenticationManager is a static class that manages the authentication modules that an application uses. When a request is made to protected resources, the AuthenticationManager calls the Authenticate method to get an Authorization instance to use in subsequent requests.

The AuthenticationManager queries each registered authentication module by calling the IAuthenticationModule.Authenticate method for each module. The first authentication module to return an Authorization instance is used to authenticate the request.

Modules that provide the basic, digest, negotiate, NTLM, and Kerberos authentication types are registered with the AuthenticationManager by default. Additional authentication modules that implement the IAuthenticationModule interface can be added using the Register method. Authentication modules are called in the order in which they were added to the list.


The Kerberos and negotiate authentication type is not supported on Windows 95/98 or Windows NT 4.0.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
© 2015 Microsoft