diff --git a/config/alfresco/subsystems/Authentication/passthru/ntlm-filter-context.xml b/config/alfresco/subsystems/Authentication/passthru/ntlm-filter-context.xml
index 14b74da0eb..4c5b8d062f 100644
--- a/config/alfresco/subsystems/Authentication/passthru/ntlm-filter-context.xml
+++ b/config/alfresco/subsystems/Authentication/passthru/ntlm-filter-context.xml
@@ -38,13 +38,10 @@
       </property>
    </bean>
 
-   <bean id="webscriptAuthenticationFilter" class="org.alfresco.web.app.servlet.WebScriptNTLMAuthenticationFilter">
+   <bean id="webscriptAuthenticationFilter" class="org.alfresco.web.app.servlet.WebScriptSSOAuthenticationFilter">
       <property name="active">
          <value>${ntlm.authentication.sso.enabled}</value>
       </property>
-      <property name="serverConfiguration">
-         <ref bean="fileServerConfiguration" />
-      </property>
       <property name="authenticationService">
          <ref bean="AuthenticationService" />
       </property>
@@ -60,12 +57,6 @@
       <property name="transactionService">
          <ref bean="TransactionService" />
       </property>
-      <property name="mapUnknownUserToGuest">
-         <value>${ntlm.authentication.mapUnknownUserToGuest}</value>
-      </property>
-      <property name="configService">
-         <ref bean="webClientConfigService" />
-      </property>
       <property name="container">
          <ref bean="webscripts.container" />
       </property>