Webservice -remote .net server returned error: (401) Unauthorized?

[mike999]

Webservice: We made a new complete clean installation with 1.6.and have made new key and have keept all the "Show Get" and "Modified PUT" as it should as we had in our earlier installation when using 1.5 that worked well.

 

addresses GET

carriers Get

countries GET

customers GET

order states Get

orders GET & PUT

products GET

combinations GET

 

We can see that when using the api test it makes the the right XML in the webpage .And we on the website can se the order with product detail

 

But when the logistic compony is trying to get the order for packing. They just get as follow:'

" The remote server returned an error: (401) Unauthorized. "

 

What wrong here?