>You're using MSXML4 already. Can you provide more details?
>
>>We have an older app built using MSXML2 DOM to manage XML data feeds and it has stopped working. We are getting HTTP request errors 0 (Message OLE IDispatch exception code 0 from msxml4.dll: System error: -2146697208).
>>
>>Two questions:
>>1) Can anyone tell me what this error means? I am having a hard time finding out where to get info on this error.
>>2) If we convert the program to use MSXML4 are there any gotchas to be aware of?
>>
>>TIA for any help you can provide!
>>Margaret

Yes. The program we are using for HTTP functions was written by a contractor a number of years ago. That program specifically instantiates the MSXML object as This.oDOM = CREATEOBJECT("MSXML2.DOMDocument")

Through out the custom class MSXML2 is specifically referenced as:
MSXML2.DOMDocument
MSXML2.XMLHTTP
MSXML2.XMLHTTP.4.0
MSXML2.IXMLDOMNODE

The class is used to upload and download XML documents with an automated client. I can alter the code to specify MSXML4 but have no experience in working with it, so I don't know if that is a good, bad or indifferent idea.