AuthPersistence

The AuthPersistence property specifies authentication persistence across requests on a connection using NTLM authentication.

**[IIS 6.0]**When the AuthPersistSingleRequest flag is set to true when using NTLM authentication, IIS 6.0 automatically reauthenticates every request, even those on the same connection. (Reauthenticating every request also occurs on all other authentication schemes.)

**[IIS 5.0][IIS 5.1]**On IIS 5.0 and IIS 5.1, there are two other flags for the AuthPersistence property specifying persistence based on the existence of a proxy server.

Schema Attributes

Attribute Name	Value
ADSI/WMI Data Type	DWORD
ABO Data Type	DWORD_METADATA
Schema Default	AuthPersistSingleRequest
Internal Default	Not specified.
Upper Bound	0
Lower Bound	Not specified
Internal ID	6031
Friendly ID	MD_AUTHORIZATION_PERSISTENCE
Property Attributes	INHERIT
User Type	IIS_MD_UT_FILE

Configurable Locations

You can configure this property at the following locations in the IIS metabase.

Metabase Path	IIS Admin Object Type
/LM/W3SVC	IIsWebService
/LM/W3SVC/n	IIsWebServer
/LM/W3SVC/n/ROOT/file_name /LM/W3SVC/n/ROOT/virtual_directory_name/file_name	IIsWebFile
/LM/W3SVC/n/ROOT/physical_directory_name /LM/W3SVC/n/virtual_directory_name/physical_directory_name	IIsWebDirectory
/LM/W3SVC/n/ROOT /LM/W3SVC/n/ROOT/virtual_directory_name	IIsWebVirtualDir

Flags

Flag Name	AuthPersistSingleRequest
Versions Applicable	[IIS 5.0][IIS 5.1][IIS 6.0]
Description	Setting this flag to true specifies that authentication persists only for a single request on a connection. IIS resets the authentication at the end of each request, and forces re-authentication on the next request of the session.
Bitmask	64 (hex 0x00000040)
Friendly Bitmask ID	MD_AUTH_SINGLEREQUEST
Internal ID	6283

Flag Name	AuthPersistSingleRequestAlwaysIfProxy
Versions Applicable	[IIS 5.0][IIS 5.1]
Description	Setting this flag to true specifies that authentication is valid for a single request if by proxy. IIS will reset the authentication at the end of the request and force re-authentication on the next request if the current authenticated request is by proxy of any type.
Bitmask	256 (hex 0x00000100)
Friendly Bitmask ID	MD_AUTH_SINGLEREQUESTALWAYSIFPROXY
Internal ID	6285

Flag Name	AuthPersistSingleRequestIfProxy
Versions Applicable	[IIS 5.0][IIS 5.1]
Description	Setting this flag to true specifies authentication will persist only across single requests on a connection if the connection is by proxy. IIS will reset the authentication at the end of the request if the current authenticated request is by proxy and it is not the special case where IIS is running MSPROXY.
Bitmask	128 (hex 0x00000080)
Friendly Bitmask ID	MD_AUTH_SINGLEREQUESTIFPROXY
Internal ID	6284

Requirements

Client: Requires or Windows XP Professional.

Server: Requires or Windows Server 2003.

Product: IIS

See Also