Hmmm... That worked, to my surprise, since I also already had MSXML3, 4, and 6 in the system folder. I also revised the Include file to

#DEFINE XML_XMLDOM_PROGID	"MSXML2.DOMDocument.4.0"  && "msxml2.domdocument"

Thanks for the tip.

>Try to install the latest versionb of MSXML 4.0 http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=15697
>
>>I'm trying to test Rick Strahl's wwSoap class to call a web service with a small program derived from his help files for that class. When I either run or compile it, it gives me the error

OLE error code 0x80040111: ClassFactory cannot supply requested class.

in the line of code in Rick's WWSOAP.PRG

loDOM = CREATEOBJECT(XML_XMLDOM_PROGID)

where XML_XMLDOM_PROGID is defined as

#DEFINE XML_XMLDOM_PROGID	"msxml2.domdocument"  && "MSXML2.DOMDocument.4.0"

in the Include file. MSXML2.DLL is installed on the machine. Any ideas what I'm missing?