I have a problem with Adobe Digital Editions (4.5.4) in Windows 10. When I try to open ADE, an icon appears on the taskbar with a blue line (showing it is active), but ADE does not appear on the screen. This happens however I try to turn it on, e.g. from the start menu, from a screen icon, or by right-clicking on an epub book in 'My Digital Editions' and telling the computer to open it using ADE. If I try to open an epub (e.g. welcome.epub) and hover over the ADE icon on the taskbar, a thumbnail of the epub appears, but clicking on it just makes the thumbnail disappear. When I then right-click on the ADE icon and tell it to close the window, a dialog box appears with the message (which I don't understand): "welcome.epub is not open from library, would you like to copy it to library?" I have tried uninstalling and reinstalling ADE.
Has anyone else had this problem? How can I get Adobe Digital Editions to open properly so that I can read my epub files?
Has you check it with right-click and run as admin?
Thanks for the suggestion — I tried doing as you suggest, but it made no difference.
No, this is the only ADE version I have. I uninstalled the earlier edition when I updated to 4.5.
The Version 4.5 has any problems. Better you uninstall it and install again 3.0.
Thanks! That has worked.
You are welcome.
Thank you for your support , I had the same issue and make above steps , but when add a eBook link the program tell me message ( error check activation ) . please advise .
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..
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.
That registry procedure didn't work.
I have Ebooks downloading from Kobo set to open with Adobe Digital Editions. (4.5.10)
Lately, it has stopped opening them. Instead I get a message:
"Unable to open X
Errors were encountered in this item"
Reinstalling and updating didn't help.
Took the advice to revert to 3.0 - http://download.adobe.com/pub/adobe/digitaleditions/ADE_3.0_Installer.exe
Also renamed "My Digital Editions" folder in Documents to "Digital Editions Old"
That worked, but don't know which action was responsible. Should have done them separately...
This worked for me!! Thank you. I had issues with 4.5 eddition so I unistalled it and installed the 3.0. I got the authorisation activiation error and so I took the above steps removed the adept file, reauthorised and BINGO!!