Hello forest43a,
- Launch Adobe Digital Editions
- Keeping ADE program active on your screen, Hold Ctrl+Shift+D keys.
- You will get a prompt window withan option to Erase Authorization (ADE 2.0).
- - Deauthorize ADE and Re-launch it.
- Navigate to Help > Authorize Computer (in ADE 2.0) .
Regards,
Yuvraj.