Message: "Make sure the disk containing your library is connected, then click Try Again. Library Location: (null) You can also reset your library, then sign into view and re-download your purchased books."
But reset button does nothing. Mac Catalina 10.15
MacBook
Resetting the folder permissions worked.
Frustrating that I had to reboot a couple of times while trying out other methods.
And also the problem seem to be completely random.
I have exactly same problem! Have tried to reset - nothing happens. I can find the books stored at /Users/admin/Library/Containers/com.apple.BKAgentService/Data/Documents/iBooks ---- But somehow the Books app doesn't have access to them.
This is so bloody frustrating!
I only started USING 'books' over this past summer, before Catalina. I was instantly put off by how problematic it seemed to be. Now it's just too frustrating for words. I have encountered at least FOUR separate, unique dealbreaker flaws that required either days figuring it out on my own, OR hours solving it with Apple support. I see light at the end of the tunnel though...I can't admit defeat! Thanks for sharing your stories.
Apple Books can’t access your library.
