Note: This issue is made obsolete by Digital Rights Management improvements in Adobe Digital Editions 1.5 or later. The information provided here is for users who may still be using Adobe Digital Editions 1.0. Adobe recommends that all users update to Digital Editions 1.5 or later.
Digital Editions 1.5 or later users who wish to move epubs from one machine to another should follow the information in the "Transferring Items Between Computers" section of the Digital Editions 1.5 (or later) Help.
In Digital Editions 1.0, you can only open or read eBooks using Adobe Digital Editions on the computer from which you purchased the eBooks.
Digital Editions 1.0 does not support portable content. When you purchase an eBook, the eBook is locked to the computer and user.
Adobe recommends that all users update to Digital Editions 1.5or later.
Adobe Digital Editions 1.5 or later converts items to a license associated with a named account, which enables digital content to be backed up, copied, and read on other machines. All items subsequently downloaded to an authorized machine with Digital Editions 1.5 or later are licensed to a named account. Users should note that an Adobe ID is required to use named activation.
In some rare cases updating to Digital Editions 1.5 or later may not resolve the existing issue with your current book.
If you purchased eBooks with Acrobat7 or Digital Editions 1.0and updating to Digital Editions 1.5 or later does not successfully migrate the content, then you can contact the publisher to explain the situation. The publisher may allow you to download a new copy of the eBook.