var xmldoc = new ActiveXObject("Msxml2.FreeThreadedDOMDocument.6.0");  
var SchemaCache = new ActiveXObject("Msxml2.XMLSchemaCache.6.0");  
  
xmldoc.async = false;  
xmldoc.validateOnParse = false;  
SchemaCache.add("x-schema:books", "collection.xsd");  // Здесь ловите исключение
xmldoc.schemas = SchemaCache;  
// The document will load only if a valid schema is attached to the xml  
// file.  
xmldoc.load("collection.xml"); 
if (xmldoc.parseError.errorCode != 0) {  
   var myErr = xmldoc.parseError;  
   WScript.Echo("You have error " + myErr.reason);  
} else {  
   WScript.Echo(xmldoc.xml) ;  
}