1.Instal remove ePub DRM.

When you install all the programs, Remove DRM from epub now. Run epub remove drm on your computer. If using Win7 or Vista, click the program icon to "run as administrator" , it need file access permission, A dialog windows will pop up :

2.Input files
Click on the "browse" button to choose your EPUB ebook / input folder. You'll find it in "My DocumentsMy Digital Editions". If you just can't find the EPUB ebook, open Adobe Digital Editions and find the path in the properties of the ebook. You do not need to find the ePub Files one by one, just choose the folder which the epub files saved, Remove ePub DRM will decrypt all the DRM ePub file under input folder!

3.Click "unDrm directory", then remove DRM from epub files all the folder. Open your newly created DRM-free EPUB file with your favorite application (on whatever device you like). The decrypted epub files will saved to another folder(set as default).

Note: Some epub files may not be protected, remove DRM from ePub books will copy the files to nodrm folder under "Output Path".