1 Reply Latest reply on Aug 24, 2017 3:46 AM by Nanaky

    .acsm files do not open in Adobe Digital Editions 4.5


      My ebooks download with extension .acsm.  I connect my Kobo eReader.  I open the .acsm file with Adobe Digital Editions.  I get "Error: Check Activation".  Adobe Technical support cannot help and refer me to this forum.

        • 1. Re: .acsm files do not open in Adobe Digital Editions 4.5
          Nanaky Level 5



              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..




              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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