The ArcIMS Java Viewer returns the following error:
"AXL Project File: Data Cannot Be Found. Check Connections and Retry."
This is usually caused when using the Microsoft IIS6 web server on a Windows 2003 machine.
The web server is missing the MIME type for the extension '.AXL'. It is not able to load the default.axl file which includes all the information about the data that needs to be loaded in the Java Viewer.