gerick wrote:
> I am calling a web service that works in Windows XP but does not Vista. The 
> following error is produced calling the send method: "The client and server 
> cannot communicate, because they do not possess a common algorithm."
> 
> Code:
> Dim objXMLServerXMLHTTP As MSXML2.ServerXMLHTTP60
> Set objXMLServerXMLHTTP = New MSXML2.ServerXMLHTTP60
> 'Build HTTP Header
> objXMLServerXMLHTTP.setTimeouts 6000000, 6000000, 6000000, 6000000
> objXMLServerXMLHTTP.Open "POST", p_strPOST, False
> 
> objXMLServerXMLHTTP.setRequestHeader "Content-type", "text/xml; charset=utf-8"
> objXMLServerXMLHTTP.setRequestHeader "SOAPAction", p_strSOAPAction
> 
> 'Make the SOAP Call
> objXMLServerXMLHTTP.Send p_strData
> 
> Has anyone experienced this or have any suggestions.

Is that a HTTPS connection? There is one knowledge base article 
http://support.microsoft.com/kb/907829 with that error message, however 
it does not relate to MSXML but rather to .NET.
Nevertheless "do not possess a common algorithm" sounds as if encryption 
does not work.

-- 

	Martin Honnen --- MVP XML
	http://JavaScript.FAQTs.com/