Oops! This document couldn't be opened.

I have been having the same problem "Ooops this document cannot be opened, protected DRM etc. for over two weeks.  Have tried all forms of deleting, reinstalling, authorizing, de-authorizing, Kobo factory resets, dropping back to ADE 3 from 4.54 and absolutely nothing works.  Books appear in my ADE Library, from public library, and can be read, but Kobo cannot open them!   Should a person be looking for a different type of e reader?

can you help I have done everything in the forum. uninstalled ADE 3.0 (PC windows 10) (i had a different problem in december and the upgrade was not the answer) , the regedit delete the authorization for the computer and the ereader. restarted multiple times. reauthorized several times. I even tried downloading the book from another library. still this  Oops! This document couldn't be opened this document is protected by Adobe Digital Rights Management (DRM) and is not currently authorized for use with your Adobe ID. I have tried the fixes in the forum and nothing worked. I tried the chat but this is an unsupported product. I get library books at least weekly and really want to be able to read them on my kobo ereader.  Please help.

At this point, I am past frustrated an getting to enraged. None of these fixes are working, I borrowed a book five days ago and haven't read word one! ADE please respond,

I reset my Kobo to factory . I didn't go to Kobo to update my kobo but bypassed the Kobo site. Then I downloaded a book and put it in ADE and plugged in my Kobo. I authorized it and added the new book. When I opened it in the e-reader it worked.

Nothing in the forum has worked for me. I have a Kobo Aura.

I worked on this for ages trying to figure it out.  4 hours today at least.   Finally I thought it might have something to do with the fact that I had Overdrive on my system first then bought the kobo.  Downloaded ADE and installed that.

So this is what worked for me.

  I went into settings on my KOBO.  Three bars top right.  Then into accounts.  then deauthorized the KOBO.     Then I went into Adobe Digital Edition and deauthorized my computer.  (under help erase authorization) .    I then reauthorized the computer but when the screen comes up to type in your name and password, over top of that you will see a click box for the type of authorization you need.   I forget exactly what it says but the box will say Adobe Digital Editions.   If you click on that you will see a heading way down the list called Overdrive.  Set that as the authorization.  Click it so the box changes from Adobe Digital to Overdrive.    The KOBO automatically authorized itself from ADE for some reason.   Downloaded a book put it on and it was fine.

     It might possibly be because I have both Overdrive and Adobe D.E. on my machine and Overdrive was there first.    Just a guess but it worked for me.  At least for now.   Let me know if this works for you and if you have Overdrive installed.  Maybe it is getting mixed up over the two authorizations?

Thank you thank you thank you!! So, only 3 hours for me to solve this problem! I'm so grateful to all of you who wrote your solutions here! I can't believe it's two years since this thread started and the problem still exists!

Hello!

I have the same problem as you and the only thing I can think of is the type of book you download. Some will let you and some will not. Why? I do not know. That's the only thing I can figure out.

I have ADE 4.5 and read a lot of library books on my kobo glo reader. 9 Out of 10 books transfer without a problem from my computer to my e-reader via ADE but every once in a while I get the "oops" message. The funny thing is, that I can open the book on my computer and on my tablet, but not on my e-reader.......

Actually this fix works in 4.5 as well.  Just to clarify, here is what I did....

If you’re having trouble getting library books on a kobo (quite probably a new one because changing things typically causes problems), try deleting all authorizations - (on both your computer and on your ereader, but keep the ereader connected via the USB.) 

Next, go to your public library website and get a NEW book - (something about trying to open a book that you already took out somewhere, causes a glitch - for example if you previously opened a book on a tablet or phone, then that’s it - it's extremely unlikely that you will be able to open it elsewhere, so make sure it is a newly borrowed book. If you are out of new borrows, because the limit is usually 10 books per library user, then use adobe to return a book, close and reopen adobe so that the return definitely happens.).  Download the new book to your saving spot,  and click it to make it open in adobe digital editions:  Adobe will then PROMPT YOU for the authorization. Use the drag down menu to find your library’s license type: for me it is Overdrive. Then enter your (Overdrive) email address and password. This should cause the book to open AND it also should cause your connected ereader to become authorized at the same time.  Click the back button at the top to get the book to close, then click your ereader, and then it’s gear sign to look to see if your ereader got automatically authorized (as it did for me). Even if it is not authorized, try dragging the new book onto it.  This should work immediately , or perhaps it will ask for the authorization again.  You can then click on the ereader's name on the left (not on all items) and see if you can open the book as it sits in the ereader area.  If it opens there, you should be good.