All menu items, including authorize and erase authorization, and functions like select and copy, are grayed out. The only function that works is "find." Any thoughts on how to activate these tools/functions.
Do you used Windows or Macintosh?
Macintosh. MacBook Air with OS X Yosemite 10.10.5
In Windows 10 the path to the activation.dat key is different: Users\AppData\Roamng\Adobe\Adept
I did delete that key, which unlocked the option to Erase Computer Authorization. I entered my password as requested and got the error message, "Unable to Erase Authorization. Please try after some time."
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..