Has you check to open the eBook over the File System of your Tablett?
I have the same problem and these people are no help at all
Yes, but it didn't help.
After a lot of trial and error and other forums I think that the problem might be in the Adobe-ID. The version I have on my computer is a lot older than the one I have on my tablet. I never had to create an Adobe-ID for my computer.
Now I tried to sign in with my Adobe ID on my computer but it said: You can not authorise the computer with an Adobe-ID which was used before to authorise another computer or another mobile device. Please try again.
Now I'm totally lost. On one hand its said, that you need to register with the same Adobe ID on all you devices so that you can exchange the contents, but on the other hand it simply doesn't work, because Adobe won't allow it?? Can someone explain that?
How the hell can I open my books on both, the computer and the tablet??
Have you open the eBooks without authorize? If yes the eBooks are linked with this emty authoirze.
To resolved the issue:
Start Digital Edition on your Computer.
CTRL + SHIFT + D.
Accept that you want remove the authorize.
Then authorize again.
But you want not can open ebooks again which has open with empty authoirze.
I had to restart my computer, but then it finally worked with your tip. Thank you very much!!
Your are welcome.