I Have two laptops ACER, both have ADE 4.5 loaded and authorised, on one I can successfully download ebooks and transfer to my KOBO reader. On the other I have problems and tried to unauthorise ADE but keep getting error message incorrect password. The password I use is valid as I can access my adobe account using it. All I need to do is reset my password on this laptop. Both laptops use use the Windows 10 upgrade.
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.