Just got a new kobo Arc for Christmas- will probably be enjoyable at some point but now it is just endless frustration! I am trying to download books from the public library and keep getting E_ADEPT_UNKNOWN (error code 2003) what is this and what do I do?
The whole experience can be extreme irritating/challenging. Usually worth it in the end ....
Is that error message is coming up on the Kobo, or on ADE (Digital Editions) on a PC or Mac?
If on the kobo, what app are you using? Try installing the(free) Bluefire app and see if that works better, quite a few people have problems authorizing both Aldiko and Overdrive which are the other most common apps.