Click on the Download option at the top, and OneDrive will now download all files to the PC at once. It worked just fine for me on my Windows 11 PC and here is the screenshot.

What are CAB files & how do you create or install Cabinet files on Windows 11/10? It explains two methods by which the user can install CAB files on Windows.

Your Kindle isn't restricted to books from Amazon. Here's how to send other ebook formats to your ereader, and where to get free ebooks, including with Amazon's Stuff Your Kindle events.