NTLM Authorization issues

[DavidStreet]

Hi, I am making calls to WCF services on IIS7. After I make a call using a REST call from the ArcGISDynamicMapServiceLayer Map Service (esri.arcgis.client.dll) I get an NTLM authorization error to any future WCF calls. Do you have any suggestions on how I can get around this?  Looking at Fiddler it seems like the Map Service is removing the NTLM data. Thank you in advance for any suggestions.

David

[EricMiller1]

David,

   Can you please provide a few more pieces of information?  First, have you enabled security on your services?  If so, please let us know what type.  Second, how are you accessing the service (through a firewall/DMZ, or internally). Finally, what is your local security policy setting for Network security: LAN Manager authentication level?  We recommend that it be set to "Send LM and NTLM only".

Thanks,
Eric Miller
Esri Product Engineer