Adobe Digital Edition - Connection Error

[Coach_S]

On Adobe Digital Editions when my students try to activate their PC computer they are receiving a Connection Error. 

We have uninstalled the software, restarted the computer and then re-installed the software same error message.

The students are running XP Professional on their PC.

Any help would be appreciated!

[r_c_v51449758]

I have the same problem with Vista. There are already a lot of posts about this problem but Adobe does not react at all. So frustrating