Unable to connect my Kobo reader

[jacquesl49913561]

My problem start with the error message : E_AUTH_BAD_DEVICE_KEY_OR_PPKCS12...

I look here in the support page found nothing really usefull.  Elsewhere on the net I find that unconnecting the device and reconnecting could solve the problem.  All this after many days of trial.  I uninstalled the reader and now I got a new well write message saying that Digital got a error on the activation serveur.

I can solve this ?

[Nanaky]

Windows:

    Close all applications.

    Press WINDOWS + R.

    In the Open text box, type regedit and then press Enter. The Registry Editor opens.

    In the left pane of the Registry Editor, locate the following registry key: HKEY_CURRENT_USER\Software\Adobe\Adept

    Remove the Adept Folder.

    In the Confirm Key Delete dialog, click OK.

    Close the Registry Editor.

    Open Adobe Digital Editions and reauthorize..

Macintosh:

    quit Adobe Digital Editions.

    Navigate to /Users//Library/Application Support/Adobe/Digital Editions and drag the activation.dat file to the trash.

    If you are using 10.7, see https://helpx.adobe.com/x-productkb/global/access-hidden-user-library-files.html

    Open Adobe Digital Editions and reauthorize.