Raised when an error occurs during sign-out.
Assembly: System.IdentityModel.Services (in System.IdentityModel.Services.dll)
This event is raised through a call to the OnSignOutError method from inside the WSFederationAuthenticationModule.SignOut(Boolean) method while signing out of the session at the relying party (RP). The event is not raised when doing federated sign-out through the FederatedSignOut method.
The event is a cancellable event. You can set the Cancel property in an event handler to prevent the exception that caused the error from being returned to the initiator of the sign-out.