Hi

we have a development and production setup. 

In the infopath form, there are list boxes which can be retrieved AD data (name) through the webservice which we created. If I invoke the webservice methods inside the production server, it is working (meaning pulling information) The same thing is not working if I open the form through sharepoint.

(It is opening the infopath form but there is NO AD names in the list box) (both dev and prod)

What could be the reason behind this?

Note : Yesterday, I was able to see all the AD list in both dev and production.

Is this any security issue in the server or what else?

Please let me know

 Ravi