
Adobe Digital Editions uses ADEPT DRM to encrypt eBooks and prevent unauthorized sharing. To ensure full access to your purchases, it's helpful to understand Adobe DRM and how to remove it if needed.

1. What is Adobe DRM?
1.1 - What is Adobe DRM and how does it work?
ADEPT is Adobe's DRM system designed to safeguard eBooks. Notable platforms like Google Play Books, Kobo, and OverDrive, use ADEPT or its variants to encrypt their eBooks. In the ADEPT system, eBooks are encrypted with a book key—each digital copy of the same book shares this key. The distributor selects the key and encrypts the eBook accordingly. Additionally, every user has a unique user key generated during the installation of Adobe Digital Editions and uploaded to Adobe's servers. Adobe DRM restricts content access to up to six devices, allowing users to view their eBooks across those machines.

1.2 - How to Download eBooks Encrypted by Adobe DRM?
If you've purchased ebooks from platforms like Kobo or Google Play Books, you might have encountered ACSM files. An ACSM (Adobe Content Server Manager) file isn't the actual eBook but a link to download the full eBook through ADE. To download and access Adobe-DRM-protected EPUB and PDF eBooks, you'll need the Adobe Digital Editions. Before downloading, ensure your computer is authorized with an Adobe ID. For a detailed, step-by-step guide on downloading eBooks with Adobe DRM, refer to the instructions.

Update: A simpler Solution to Download ACSM as EPUB/PDF
With Epubor ACSM Mate, you can remove DRM and convert ACSM files to EPUB/PDF without needing Adobe Digital Editions.

2. How to Remove Adobe DRM?
There are different DRM encryption schemes used in eBooks downloaded via Adobe Digital Editions. Currently, eBook DRM removal tools are designed to handle eBooks purchased from major vendors, such as Google Play Books, eBooks.com, OverDrive, Booktopia, and Kobo. Next, we'll guide you through removing Adobe DRM using the versatile tool Epubor Ultimate. This all-purpose solution simplifies the DRM removal process, giving you full access to your purchased eBooks.
Step 1Download and Install Epubor Ultimate.
Step 2Remove Adobe DRM from Kobo/Google Play/OverDrive//Nook eBooks.
1. Remove DRM from Google Play Books
To remove Adobe DRM from Google Play Books using Epubor Ultimate, open the software and go to the Adobe tab on the left sidebar, where all Google Play Books downloaded via ADE are listed. Simply drag and drop the books from the sidebar into the main window on the right, and the software will automatically remove the DRM, giving you DRM-free copies of your eBooks.

Once the decryption process is complete in Epubor Ultimate, a green check icon will appear next to the book title. To access the DRM-free file, simply click the green check icon, and it will take you to the location of the file.
2. Remove DRM from Kobo Books
Epubor Kobo Mate allows you to download purchased Kobo eBooks, Kobo Plus eBooks, and Kobo audiobooks as regular EPUB and MP3 files. Check out the full guide to unlock both your Kobo eBooks and audiobooks effortlessly.

1. Kobo has partnered with many online bookstores, such as Booktopia, Bol.com, etc, all of them use the same DRM encryption scheme, so users can use Epubor tool to decrypt ebooks that link to the Kobo account, too.
2. You can also use Epubor Ultimate to remove DRM from Kobo ebooks downloaded via ADE — the process is the same as with Google Play Books.
3. Remove DRM from Adobe DRM-protected Library Books
Adobe DRM is adopted by many library sites. Luckily, Epubor Ultimate can handle nearly all eBooks that use Adobe DRM. We have created two guides to deal with borrowed books from Libby and Hoopla. The same steps apply to decrypt all eBooks with Adobe DRM.
Refer to this guide to decrypt Libby eBooks.
Refer to this guide to free your Hoopla borrowed eBooks.

4. Remove DRM from Nook Books
To obtain Nook books and remove Nook DRM, both the Android Studio emulator and Epubor Nook Converter are required. You can follow this guide to remove Nook DRM.

You can watch the video tutorial here:
How to Deal with Other DRM?
1. As more booksellers shift from Adobe DRM to LCP DRM, such as ebooks.com, you can use this guide to remove LCP DRM.
2. Epubor tools support most eBooks purchased from major retailers. For more information, please refer to this step-by-step guide.

Amy Lopez crafts informative articles on eBooks and eReaders, uncovering optimal methods to enhance your eBook reading experience, and eagerly shares her findings with you.




