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To read downloaded DRM-protected eBooks on your computer, you'll need to authorize Adobe Digital Editions (ADE). To read the same eBooks on additional computers or devices, be sure to authorize each one with the same Adobe ID. You may authorize up to six computers and/or devices.
Note: These instructions are for ADE 2.0. Please make sure you're using the most up-to-date version before continuing.
Adobe Digital Editions installed on your Windows or Mac computer
If you aren't prompted to authorize ADE the first time you open it, you can go to Help > Authorize Computer to start the process manually.
If you have an Adobe ID, enter it along with your password.
If you do not have an Adobe ID, click Create an Adobe ID to make one on Adobe's website. Once you're done, return to the 'Computer Authorization' dialog box and enter your Adobe ID and password.
Click Authorize. Your computer is now authorized with your Adobe ID.
Note: If you choose to authorize your computer without an ID, you will still be able to view eBooks on your computer. However, you will not be able to transfer or download those titles to other devices.