| Tool | Adept DRM Support | Error Reporting | Success Rate (ADE 4.x) | |------|------------------|----------------|-------------------------| | Epubor Adept | Yes | Poor | ~70% | | Calibre + DeDRM | Yes (via plugin) | Moderate | ~90% (if configured correctly) | | Any eBook Converter | Yes | Better | ~85% | | Epubor Ultimate (includes Adept) | Yes | Same as Adept | ~70% |
However, a common and deeply frustrating error users encounter is: epubor adept drm removal failed
But be prepared to downgrade ADE and possibly contact support. The “failed” error is common enough that many users abandon the software. | Tool | Adept DRM Support | Error