See attached screenshot for details on where it is in IIS6 & uncheck that option as need be. A similar option exists in the 'Handler Mappings' section of IIS7, called 'Invoke handler only if request is mapped to. Start -> Run -> inetmgr -> Web Sites -> Default Web site -> PharosSystems (right click properties) -> Virtual Directory -> Configuration -> SOAP -> Edit -> uncheck Verify that file exists. Once that is done Start -> Run -> IISRESET.