Why will Win 10 not recognise my ADE account - it is working on my other computers - it informs me that any ID used on the Win 10 machine can only be used on that machine and cannot be used elsewhere - this despite ADE being supposedly multi platform/machine. In over 10 years with the same account I've never experienced this before.
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.