Silverlight WCF service binding error, "The remote server ..:Not found" -

this first post on here. normally, find answer on other threads, time i'm stumped.

i have silverlight app , can connect webservice send/receive data fine, except 1 page have. other pages, can data, make changes , send service. 1 page, try send data service , gives me login box web server. whether put in credentials or not, error "the remote server returned error: not found." have combobox gets loaded on page load event , gets data service fine.

any appreciated.

here web.config file:

<configuration>     <system.web>         <authentication mode="windows"/>         <compilation debug="true" strict="false" explicit="true" targetframework="4.0" />         <customerrors mode="off"/>     </system.web>     <system.servicemodel>         <behaviors>             <servicebehaviors>                 <behavior name="">                     <servicemetadata httpgetenabled="true" />                     <servicedebug includeexceptiondetailinfaults="false" />                 </behavior>             </servicebehaviors>         </behaviors>         <bindings>             <custombinding>                 <binding name="network_integrity_control_panel.web.service_ad_sql.custombinding0">                     <binarymessageencoding />                     <httptransport authenticationscheme="negotiate"/>                 </binding>             </custombinding>         </bindings>         <servicehostingenvironment              aspnetcompatibilityenabled="true"             multiplesitebindingsenabled="true" />         <services>             <service name="network_integrity_control_panel.web.service_ad_sql">                 <endpoint address="" binding="custombinding" bindingconfiguration="network_integrity_control_panel.web.service_ad_sql.custombinding0"                           contract="network_integrity_control_panel.web.service_ad_sql" />                 <endpoint address="mex" binding="custombinding" bindingconfiguration="network_integrity_control_panel.web.service_ad_sql.custombinding0"                            contract="imetadataexchange" />             </service>         </services>     </system.servicemodel> </configuration> 

firstly , welcome so .

it gives login box because authentication mode windows

what see config endpoint address empty address="".

you should give address in code or in config file.

have @ microsoft resources http://msdn.microsoft.com/en-us/library/ff648505.aspx