MSXML problem on Win2003 Web Server: 800a01fb|An_exception_occurred

[Carrugar]

Hi folks, was hoping someone might have some suggestions to a major PITA problem I'm having!

I have a function below which resides in an ASP file. It creates a URL using the strParams variable then submits it using MSXML and the .URL method. After several successful iterations, the function hangs and I get an error in the IIS logs (shown below):

Function jsDoesFileExist(strFileName)

dim xml
dim strURL
dim sURL
dim strParams
dim strAction

Set xml = Server.CreateObject("msxml")

strURL = Application("strAppRoot") & "/custom/fileshortcuts/xml_fileoperations.asp"
strAction = "jsDoesFileExist"

strParams = "?Action=" & strAction & "&"
strParams = strParams & "FileName=" & Server.URLEncode(strFileName) & "&"

sURL = strURL & strParams

xml.URL = sURL

jsDoesFileExist = xml.root.children.item("FileExists").text

if isObject(xml) then
Set xml = nothing
end if

End Function


ERROR IN IIS LOGS:

2007-08-01 11:39:04
POST ../Custom/FileShortcuts/GetFileShortcut.asp Open+START+http://pxp-wi0-flweb02/frontlinecheck/custom/fileshortcuts/xml_fileoperations.asp?
Action=jsDoesFileExist&FileName=\\pxp-wi0-fs2v3\filename.txt
+END+|196|800a01fb|An_exception_occurred:_'sURL.UR L' 80 pxp-wi0-flweb02 500 0 0

Everything between the START and END tags is what is being passed in the xml.URL property. If you copy and paste this into IE6.0 the function works ok and it calls the procudure jsDoesFileExist without error. But when running through the app I get the EXCEPTION OCCURRED error.

Could it be a memory issue? Any other suggestions greatly received.

This code used to work fine in IIS 4.0 on an NT4 server but we have migrated to IIS 6.0 on a Win2003 server and now these problems are occurring.

Many thanks in advance for any help.