Hello, thanks for your message
May I ask if you have the same issue with all your Kindle books?
Please send us the book you downloaded from the Kindle app and the key files from Epubor Ultimate so we can test them and identify the issue.
Please contact use via support@epubor.com, and we will help you solve this problem as soon as possible. Thank you!
Best regards,
Epubor Team
Did you ever resolve this? I have several that do this also. It will freeze the whole program on my Macbook. I'm side-loading from an old Kindle touch. My book was purchased before Jan 2023, also.
Thank you.
Hi, I am trying to remove DRM from one of the AZW file (the content is only available on Fire/windows/mac/android) and the progress of removing DRM never go pass 0%
While I had successfully remove other kindle purchased books.
We are sincerely sorry for this issue but we are willing to help you fix it. May I ask if there is the same issue with other books?
Could you please send us the book downloaded by your Kindle app?
We also send the email to you get help you fix this issue. Please check your mail box to get further assistance.

If I understand correctly, the latest version of Epubor Ulitmate can now remove DRM from from kindle KFX files downloaded by the Kindal Windows Reader App. My Ulitmate version is v3.0.15.912. The Kindal Ap version 2.0.0 (70301).
When I buy a Kindal book it shows up in the Kindal app and I can download and read it in the app. The book also shows up in Epubor Ultimate.
When I drag and drop the file to the right pane, a message pops up saying the DRM is being removed, but it never moves beyond 0%. Am I doing something wrong?
Thanks, Al al.beattie@yahoo.com