ADE - "Error! Check Activation".?

[fbck]

How do I check activation?  By dumb luck, experimentation, deleting authorization, re-authorization, deleting downloaded Overdrive books, downloading them again, I got 4.5 to work.  Still have no clue WHY I started receiving errors on 2.0 that drove me to download 4.5 & delete 2.0 and start messing around.  Cussing didn't help but I felt better.  ADE proves there is no "free lunch" or truly free ADE.  Users must agree to periodic torture sessions on non-helpful help sites.

[JLBSRN]

I havae this same question but my messing around has not solved the problem. Why make it so hard to verfy. while in process.  I have verified with download the program. 

[Nanaky]

Windows:

    Close all applications.

    Choose Start > Run.

    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

    Select the Adept key.

    Choose File > Export.

    In the Export Registry File dialog box, select Selected Branch under Export Range. Enter a name and location for the backup registry key, and then click Save.

    Right-click the Adept key and choose Delete.

    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.

[briang92368873]

thanks Nanaky: this deletes your computer authorization for ADE,  re-authorize and ADE works.

[JLBSRN]

I cannot find Windows. Went to setting but have administrator, systems etc. which do I chose????

Sent from my iPhone

[Nanaky]

WIndows is a operting system kind of Microsoft. What you are found not exactly?