Permission Denied Error XMLHttpRequest

Answer 1

XmlHttpRequest can only be used to call services local to the domain/server from where the page is being served.

Thus, if you're serving a page from:

http://www.example.com/page1

You cannot make an XmlHttpRequest to:

http://www.sample.com/webservice

Answer 2

Since you're setting Content-type, you need to also set it to use UTF-8. And I think it's supposed to be application/xml (source).

xmlhttp.setRequestHeader("Content-Type", "application/xml; charset=utf-8");

Otherwise, have you verified that the XML is properly formatted? Try saving it as a complete XML file and open it in your browser.

Answer 3

For Internet Explorer

http://www.simple-talk.com/dotnet/asp.net/calling-cross-domain-web-services-in-ajax/

For Firefox

http://installingcats.com/2008/01/29/how-to-fix-ajax-error-uncaught-exception-permission-denied-to-call-method-xmlhttprequestopen/