DIGITAL EDITIONS error messages! Is not performing as expected

Question

After downloading it three times, your Adobe Digital Editions I had the error message "USER NOT ACTIVATED" on my NOOK eReader which I've been using for more than 5 years to download books from my library and since I downloaded your new ADE app is not performing as expected and is unacceptable that is forcing me to choose a KINDLE instead, and just because Adobe is interfering in my reading process.

And when I tried to AUTHORIZE my new computer and new ERROR MESSAGE: “You can only authorize this computer with an ADOBE ID that hasn’t been previously used to authorize any other computer or mobile device. Pease, try again. “

Can you resolve it? Please?

I’m using a PC with WINDOWS 10

Nanaky · Accepted Answer

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.

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