Kindle app for mac computer
Solution: Please ensure your Kindle for PC/MAC are registered even if you have finished the downloading. If you really want to de-register your Kindle for PC/MAC on your computer, you can do it after the DRM has been removed from your Kindle books.
Q: Can I remove Kindle kfx DRM from Kindle devices?
Epubor Ultimate can handle books downloaded via Kindle device, not including Kindle Fire Tablet, but only Kindle e-ink devices. In this situation, you only have to plug your Kindle device to your computer. Then Epubor Ultimate will detect the Kindle Serial Number and use it to generate key to decrypt your Kindle books.
Detailed Guide>> How to Remove DRM from Kindle KFX eBooks downloaded via Kindle e-Ink devices.
If your Kindle firmware has been updated to 5.10.2 or later, you are not able to remove DRM from Kindle books downloaded via these devices. Just follow the solution for Kindle firmware 5.10.2 to fix this issue.

4You move your Kindle eBooks to other folder without the full content.

Some people move their books to the desktop for removing DRM. This is really unnecessary as Epubor Ultimate can dectect your default 'My Kindle Content' folder and display the books in the left column. The big difference between Kindle old format and the Kindle KFX format is the Kindle KFX ebook is consisted of a series of files and stored in one folder. So if you want to remove DRM from Kindle KFX ebooks on your desktop or other folders, please ensure you have the whole Kindle KFX eBook folder, not only a file with the extension of azw or kfx.

If the above 4 situations are not applied to you, you can also try the below method to solve your 'Kindle KFX DRM Remove failed' issue.

5The failure may be cuased by computer environment.

We know computer system environments are verious and some special computer environment will also cause the failure of removing Kindle KFX DRM. Although this possibility is quite slow, we still provide the solution to this situation.
1Solutions for Windows system
Step 1: Clear the cache of Epubor Ultimate. Please delete the .ultimate folder. You can find it here: C:UsersusernameAppDataRoaming.Ultimate.
Step 2: Please delete Epubor_keys folder. You can find it here: C:Usersusername.Epubor_Keys.
Step 3: Then run Epubor Ultimate to remove the DRM. If you are failed again, please delete the failed books and redownload them again. Run Epubor software to remove the DRM.
Note:
If your computer has been updated to Mac 10.15 Catalina, please don't use this method. Try Epubor KCR Converter.
If you are on Mac, it will be a slight difference.
Step 1. Delete all content Kindle content folder
Open terminal, and then copy this command rm -rf ~/Library/Application Support/Kindle/storage to the terminal and then press on “enter' to delete all files in Kindle content folder.
Open the terminal and copy the following command to the terminal rm -rf ~/Library/Containers/com.amazon.Kindle/Data/Library/Application Support/Kindle/storage and then press on “enter”.
Then copy this command rm -rf ~/Library/Application Support/Kindle and press on “enter” again.
If you have changed the directory of Kindle content folder, you have to find the folder and delete all the files manually.
Step 2. Please also delete the Epubor Key file at your Mac. You can find it here: You can find the Epubor Key files here: Mac: /Users/system user/.Epubor_Keys/
Step 3. Redownload the books and run Epubor software to remove the DRM
Now you only have to re-sync your Kindle books and run Epubor Ultimate to remove the DRM.

Ultimate Ways to Remove Kindle KFX DRM

If above solutions cannot fix your problem, here I want to share the ultimate way to help you remove Kindle DRM.

Ultimate wayDownload and Transfer via USB

Please note: Please ensure you have at least one Kindle eink device and this device is registered with your Kindle account.
Do you know that Amazon allows you to download Kindle books and transfer via USB from its online library? Why not download the Kindle books directly from the Amazon website and remove the DRM. An article on our website has given you detailed guide about downloading Kindle eBooks from Amazon website directly and removing Kindle AZW3 DRM--Download &Transfer Kindle Books via USB and Remove Kindle DRM. I am sure you will get your problem fixed by this method.

Get Assistance from Epubor Support Team

Epubor team offers various access to Epubor Support Teamfor helping our customer fix their issues and inquiries. If the all above mentioned solutions cannot fix your issues, please feel free to contact Epubor Customer Service Center via following methods:
starting a livechat
open a ticket
email to us
skype: [email protected]

Epubor team will get back to you within 24 hours and try our best to help you fix your problem as soon as possible.
Iris Yan joined Epubor since 2017. She always wants to share everything related to ebook reading and improve your reading journey.

Kindle For Mac App

Remove DRM from Kindle device and Kindle for PC/Mac with no quality loss, support AZW, AZW3, PRC, Mobi, KFX etc.

Download Kindle DRM Removal Software

Due to a change in Kindle DRM, Kindle books downloaded via Kindle for PC/Mac version 1.25 or newer or with Kindle firmware 5.10.2 or newer are with tougher Kindle DRM. Epubor Kindle DRM Removal still can help you remove Kindle DRM.

A word from our customer

Step-by-Step: How to Remove Kindle DRM

Step 1. Download Kindle Books to PC/MAC.

Please ensure your kindle books are downloaded via kindle 1.24 or older version. If not, you can downgrade kindle desktop application automatically to older version. Or you can download the older version below.

Step 2. Download and install Epubor Kindle DRM Removal(Epubor Ultimate).

Install the Kindle DRM Removal if you still haven't.

Step 3. Remove DRM from kindle kfx, azw, azw3 books.

Run Kindle DRM Removal, then drag and drop the kindle books to the main interface. Kindle DRM will be removed. Click on 'Decrypted', you will see all your DRM-free kindle books.
The Kindle for Mac 1.23 stops working completely on the macOS Catalina 10.15. To remove kindle DRM on MacOS Catalina, please follow the ultimate guide to remove kindle drm on mac Catalina 10.15 with Epubor Ultimate.

Watch this video to get the latest solution:

Remove Amazon Kindle DRM from AZW, KFX, Mobi, PRC, AZW3, AZW4, Topaz, TPZ.

Perfectly remove DRM from Kindle books which are synced via Kindle for PC/Mac, or synced by E-Ink Kindle devices.
Support all E-Ink Kindles: Kindle keyboard, Kindle 3G, Kindle 4, Kindle paperwhite, Kindle voyage, Kindle Oasis, Kindle X
Support Kindle books in these formats: AZW, AZW3, PRC, Mobi, KFX, AZW4, TPZ, Topaz.

Most Easy-to-use Ever

This software scans the Kindle contents folder if Kindle for PC/Mac is installed, and with one-click all the synced books are imported and DRM is removed automatically.
Latest version of Kindle DRM Removal supports E-Ink Kindle device better, no need to input KSN manually. Just connect Kindle to computer with USB, you will see the Kindle device shows up in the software, then directly drag the books from left side column into the main window, Kindle DRM Removal will process them automatically. The decrypted books will be saved in computer's drive.

Always keeps up with the latest DRM scheme

Kindle DRM Removal upgrades regularly to keep up with the latest Kindle DRM scheme, and also supports the latest Kindle KFX format. Every user is guaranteed to remove Kindle DRM successfully as long as the books meet the sole requirement: This book can be read via Kindle for PC/Mac or Kindle E-Ink device by user. (Rented kindle books from library are not supported.) We are also proud to claim that Epubor is the first software that can handle Kindle KFX format on the market.

Decrypt Kindle Books Losslessly, Preserve the Original Contents and Layout

Kindle DRM Removal only removes the file's DRM header data and helps you retain all the original layout and effect. Some Kindle books might change the extension name after being decrypted, like from .azw to .azw3/.mobi. That's normal, the contents and layout will not be changed.
Note: you do not need to backup source files, Kindle DRM Removal just read/copy the source contents and decrypt them.

Kindle Download Problem

Kindle DRM Removal is the easiest DRM removal software on the market, and the latest version allows users to remove DRM from Kindle books without clicking any buttons! Only by dragging Kindle AZW/Mobi/PRC/AZW3/TPZ files into the software, the books will be decrypted automatically. Batch decryption, 1-click decrypt all your imported Kindle books.
To Kindle Japan users: With this Kindle drm removal, the decrypted Kindle file will be horizontal. Here highly recommend you use Japan Customized version of Kindle DRM Removal as it will give you the vertical kindle files.
Alen A reading enthusiast. Always pay close attention to the world of Ebook. Devote myself to share everything about e-book and favorably receive any suggestions.