For this problem, you need to deauthorize and authorize ADE again.
Help -> Erase authorization.
ADE will be deauhorized.
Now again AUTHORIZE ADE
Help-> authorize computer.
Error will be fixed !!
Thanks for the info. When I open the drop-down menu under "Help" on ADE, I do not get an option for "Erase authorization." The options I get are: "Authorize Computer," ""Adobe Digital Editions Help", and "About Adobe Digital Editions." One menu item "Authorization Information" is grayed out.
If I open the "Authorize Computer" command, I get a reply that states, "This computer is authorized without an ID. Opening an Adobe DRM protected item...ever need to reinstall your OS. To change this computer's authorization to be associated with an Adobe ID, click on the Continue button."
Can you tell me how I should proceed?
You seems used a older version of Adobe Digital Edition: Start Adobe Digital Edition. Please press the key combination [Ctrl] + [Shift] + [D]. Accept the promt that remove authorization and authorize again.