You need to Activate a user on ADE to open the DRM protected books.
please go through the https://helpx.adobe.com/digital-editions/using/faq.html about ADE, specially the questions related to activations.
Please let us know if you need any assistance.
Thank you for your answer, and I'm sorry to trouble you more, but although I do have an active Adobe account, and although I just uninstalled and reinstalled ADE and made sure my computer is registered on it (it is) - I am still getting the same message when I try to read the epub book I bought. What am I doing wrong?
I went over every single question on the Help about this issue, as you suggested, but didn't find an answer that could help me.
I am having the exact same problem, Nurit. I don't see any reply to your last post, right?
Not yet... that's interesting. I wonder if it's some as-yet unidentified bug.
I'm having the same issue. I also tried to "Erase Authorization", but it wont let me do that either.
I have had exactly the same problem, but have managed a fix and it works just fine now.
These are the steps I took:
1. Uninstall ADE and do a restart
2. Download a new copy of ADE and reinstall
3. Go to where your books were downloaded from the Public Library in your Downloads file and delete them - when I double clicked the book, they had expired. Obviously a glitch during download
4 Go to your Public Library and re-download the books and Save As in the Adobe Digital Editions folder in your Downloads file
5. Start ADE, select File: Add to Library
6. Navigate to the Adobe Digital Editions folder in the Downloads folder
7. Select the books you want and Open them
8. They will be added to ADE
9. Connect your eReader, ADE will recognise it, drag and drop your books to your eReader and Voila!! Books on your eReader
Make sure your eReader and Computer are authorised
Didn't work for me. When I selected Add to Library the books I downloaded are not even viewable to select.
I had this same issue. i was able to deactivate my authorization - reauthorize and then it worked. If you are able to get your login and password you could hopefully try this
Ok, I tried both and both of the proposed solutions did not work: I could not deactivate my computer authorization (I was asked to try it later) and de-installing and re-installing ADE didn't work either. Any additional idea?
I couldn't erase authorization either. I followed instructions on this page to remove Adobe registry key. Once that was removed I could finally re-authorize my computer with an alternate Adobe ID. Can finally read books.
Yes! that finally worked. Thank you very much for the help. Totally made my day!!
That's great, but it didn't work for me, because using "Control Shift D" is just another way at getting at the same "deauthorization" dialog box. Like for some of the other posters above have shown, this box does not work; it continually tells me to try again later, with the result that I can never de-authorize the computer.
The "Control Shift D" did not work for me either, but deleting the registry key and restarting did work. Its basically like forcing the de-authorization by removing the authorization. Hope it works for you too.
If you can't erase authorization from ADE directly, you can follow the other steps given in the link:
Close the ADE first.
For mac, you will have to manually remove the file activation.dat from "/Users/Library/Application Support/Adobe/Digital Editions" folder.
For Win, You will need to remove the registry. Steps for which are mentioned in the link.
I hope it helps.
It did work without the first deauthorization step, thanks to both of you!
I am not a computer specialist and have a real horror from editing my registry (apart from the fact that I think that a program that requires manual registry intervention is not really well programmed). I am confused by two comments in this thread, one says: Just edit the registry manually, the other says you also need to change your Adobe ID. Do I need to create a new ID? Should I also uninstall Digital Editions in between and install it back? Can someone just list down, what I have to do from the entire picture? Currently, I have Digital Editions 18.104.22.168333 installed, I have an authorization which I can not erase with ADE. I run everything with a ThinkPad E530 computer on Windows 7 (including all updates). I have Avira Antivirus Pro installed. Should I cut the internet connection and switch off the antivirus for the work on the registry and the re-authotization or would the re-authorization not work?
Please give detailed instruction so that I can try it without failing.
New Adobe id is not required. uninstallation and installation also is not required.
There is not need to cut the internet while you are working in registry.
If due to some reason, you are unable to deauthorize ADE, follow the below steps:
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:
Right-click the Adept key and choose Delete.
In the Confirm Key Delete dialog, click OK.
Your authorization will be deleted.
ADE will be deauthorized now.
Now Authorize ADE again.
Thanks Shreya, it worked and it did not crach my computer. However, now I am getting "E_LIC_LICENSE_SIGN_ERROR" when I attempt to download a book from adobe's book example page. See thread E_LIC_LICENSE_SIGN_ERROR .