Element 'system.webServer' has invalid child element 'rewrite'. Should I fix this, and how?
The updated schema here fixed this for me.
http://ruslany.net/2009/08/visual-studio-xml-intellisense-for-url-rewrite-1-1/
Make sure you change the script for VS2010:
ruslany responded on 20 Oct 2009 at 7:10 pm #
@Gene: This is be because the XML schema cache is located in a different location in VS2010. Can you open the UpdateSchemaCache.js and replace this line:
var vs9CommonTools = shell.ExpandEnvironmentStrings( “%VS90COMNTOOLS%” );
with this line:
var vs9CommonTools = shell.ExpandEnvironmentStrings( “%VS100COMNTOOLS%” );
After that try running the script and see if that helps.