The error message "CE_COPY_NOT_ALLOWED" will display if your Adobe ID is missing or incorrect.
How to authorize Adobe Digital Editions (ADE) with an Adobe ID:
- Open Adobe Digital Editions.
- Click "Help" → "Authorize computer...".
- Enter your e-mail address and password for your Adobe ID.
- Click on "Authorize". The computer is now activated with your Adobe ID.
- Click "Finish".
Even if you have entered your Adobe ID correctly in the past, it may occure that ADE has lost or does not recognize your ID correctly. In that a case, it is helpful to deauthorize Adobe Digital Editions and then to authorize it again with the same Adobe ID.