Hi Stefan

I got the problem with the proxy. it's a strange story, in the label it's written "Domain\username:" if I enter DOMAIN\myusername I get the security error of the proxy for the authentication.
If I enter just the username I've fully operational the URL  of the xml source......

Just for your info I'm forced to do the same in DNN host proxy settings.  

Another problem is the use of the URL for the XSL, in this case I always get the following error : 
System.Net.WebException
The remote server returned an error: (401) Unauthorized 

In this case I've just few XSL that I use in my portal, so I use the internal file system and this works, but... just to let you know this possible issue.

Last. in each XML/XSL module I need to specify user and password. Without this I get proxy security error.
The only problem is that every time I need to save the module, like after a change, I MUST renter the pasword again.....

Thank you very much for your patience... I appreciate your help.

Have a great day

Daniele