can't download ebook into digital editions

i have been using de for several years, have an older version, have windows xp professional, can't download an ebook (last time 2014 was successful), and installing new version 4.5 hangs.

[Moved from the non-technical Lounge Forum to the specific Program forum... Mod]

[Here is the list of all Adobe forums... https://forums.adobe.com/welcome]