Error getting License(ADE 4.5.2 using Windows 10)

Been trying to download an epub from the library to ADE then to my Nook on ADE 4.5.2 on Windows 10 but each time i get [Error getting license....]  I've seen others have had the same problem only with older versions of both ADE and Windows and I tried restarting the program, deleting and re-downloading the file but no luck so far.  Please help!  Thanks in advance