ADE "you can only authorize this computer with an Adobe ID that hasn't been previously used to authorize any other computer or mobile devices"

Question

Hi, my problem is that when I try to authorize my new MacBook with my Adobe ID when logging in on Adobe Digital Edition it says:

"you can only authorize this computer with an Adobe ID that hasn't been previously used to authorize any other computer or mobile devices"

Although right above it says: "Authorizing your computer enables you to: Easily transfer Adobe DRM protected items between multiple computers and mobile devices" etc. which I interpreted that, I should be able to use this ID on multiple computers, in my case my new MacBook and also my stationary computer. So... why do I receive this message when I try to authorize? Could it be because I'm authorized on my old computer? I don't have access to that computer anymore so how do I erase that authorization?

Plz help

Kind regards Elin

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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