Catalina Books Error - BKAgentServiceErrorDomain error 8

I updated to Catalina 10.5 on MacBook Pro (Retina, 15-inch, Late 2013), and am now unable to open books (ePubs/PDFs alike) via Books. These books are there, I can sync them to my iPad and they open, but they do not open in Books.

The same happens with book downloaded from Books store.

This means all book are in accessable. Thank you Apple.

Books displays with the following error dialog:

The operation couldn’t be completed. (BKAgentServiceErrorDomain error 8.)

The black spinning icon show on book icon indefinitely.

Very frustrating issue, Apple has broken the app. One more thing to add to list of disappointments with Catalina!

Anyway know how to resolve?

MacBook Pro 15", macOS 10.15

Posted on Oct 22, 2019 9:38 AM

Top-ranking reply

Messi4ever

Level 1

13 points

Posted on Nov 19, 2019 4:30 PM

This is how I solved it:

Close Apple’s Book.

On “Finder” go to “Go” and from there to “Go to folder”

Type the following:

~/Library/Containers/com.apple.BKAgentService/Data/Documents/iBooks/Updates

You will go to a folder with two files inside. Delete them or, if you want to be on the safe side, move them to your desktop.

Open Apple’s Books. Now you should be able to open your books and pdf files.

Hope this helps.

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34 replies

Nov 25, 2019 6:50 PM in response to Messi4ever

This solved it for me. Thanks, Messi4ever!

bdj724

Level 1

9 points

Dec 4, 2019 8:31 PM in response to Messi4ever

OMG! Thank you!! Why Apple couldn't push this out MONTHS AGO, I don't know. But thank you! Thank you!! THANK YOU!!!!

Nov 5, 2019 4:02 AM in response to teach mug

SOLVED:

I have what appears to be a solution to my Apple Books problem. Reasoning that if an alternate user can access my books with no problem, but as the main user I could not, led me to find the following solution:

The problem was with the disk permissions. I followed the steps in the following apple support site link to reset disk permissions and my books open again. Keep your fingers crossed that it stays this way!

No more BKagent error 8 or the spinning grey wheel!

https://support.apple.com/en-us/HT203538

Dec 11, 2019 9:45 AM in response to AnthonyFasolo

FTR,

"But after finding your suggestion by sheer luck and checking into that folder, do you know what I found? I didn't find two items in there, instead I found one. An epub. A book.

A book that should have been with all the other books. Why one lonely book was thrown into that file is anyones guess. "

was my experience too.

Rebooted and no joy. Will try turning off log-ins now (the most cautious other suggestion above) and reboot and give it a whirl. Not optimistic.

Luckily IPad Pro works...I was particularly pleases with third part app to integrate the (hardware) Apple Pencil thing for annotations on that machine, so (knock wood) not a complete !@#$up with Books/Catalina.

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Catalina Books Error - BKAgentServiceErrorDomain error 8