Kindle books downloading to Calibre as KFX-ZIP

[Kitt01Mom]

Hello, new here.
I have K4PC v 2.4.0 (70904) running on my Windows 10 PC
I have Calibre v 7.26
I have KFX Input v 2.21.0 Plugin
I have DeDRM v 10.0.9 Plugin

Some books I download to K4PC and then to Calibre work fine and I can convert to epub. Others, not so much.
These are all novels, no Graphic Novels, no Textbooks. Just plain old books to sit down and read.

Some input to Calibre as KFX-ZIP and I can't do a thing.
Others input to Calibre as KFX but won't convert because the 'book is DRM locked'.
edit I just came across a book that loaded into Calibre as AZW but can't convert because "This Book is Locked by DRM".

I either download to K4PC via the Amazon Digital Content page, or from K4PC where you can download under individual books. I then go to My Kindle Content in Windows Explorer, Drag the .azw file and Drop it onto Calibre.

Unfortunately I had downloaded some ebooks to K4PC the LATEST version before I realized that would not work. The more I look, the more it seems that those books are the ones that aren't working. If it means anything, they all seem to have an MD file along with the AZW file

However I have been removing those books and redownloading with the 2.4.0 K4PC. By accidently downloading on a current K4PC, did that 'ruin' any chances I have of being able to get them into Calibre and convert to epub?
Thanks for any advise
Barb

[ElleKayEm]

You should be fine once you re-download them with 2.4.0 (70904). Be sure to prevent unwanted updates -- see info under method 2a here: https://www.mobileread.com/forums/showthread.php?t=361503

[Kitt01Mom]

Yes, I figured that redownloading with 2.4.0 (70904) would work, but it doesn't. And I've got unwanted updates unchecked and under 'about' it shows as 2.4.0 (70904).
This is what I'm not understanding why it won't work. I've redownloaded, tried with Calibre, get KFX-ZIP, remove the download, rinse and repeat. Could Calibre itself be the problem? The MD file I'm seeing in Windows Explorer, has the Calibre icon with it. Even though the books are NOT in Calibre because I've removed them.

[ElleKayEm]

At some point you've accidentally set calibre as the program associated with md files.

I would go the extra step detailed in the link I gave to prevent updates. The check box will eventually be ignored. Try deleting the entire My Kindle Content folder to be sure you're getting fresh downloads with the correct version of Kindle for PC.

[twitch2021]

At some point you've accidentally set calibre as the program associated with md files.

I would go the extra step detailed in the link I gave to prevent updates. The check box will eventually be ignored. Try deleting the entire My Kindle Content folder to be sure you're getting fresh downloads with the correct version of Kindle for PC.

Not OP but I'm having the exact same issue. Running K4PC 2.4.0 (70904) which I've verified in the app and disabled autoupdates, running Calibre 7.26 with KFX Input installed from within Calibre and DeDRM 10.0.9 from here. I've input the serial number from my Kindle Oasis in the Kindle eInk eBooks section of the DeDRM plug-in.

Any book I download from K4PC appears in Calibre as a KFX-ZIP and cannot be DeDRMed. I'm stumped and any help would be appreciated. I followed the directions in the link you provided and also just deleted my content folder and redownloaded a book to try again. Same result.

[ElleKayEm]

I don't know what the issue is with Kindle for PC. It is on the same computer and user as calibre/DeDRM? But since you have a Kindle Oasis and already have its serial number entered, you could decrypt the books downloaded direct to it instead.

[twitch2021]

There’s the other thing. I can’t get my kindle to connect to my computer. It’ll charge when plugged in but doesn’t appear as a device for some reason.

[ElleKayEm]

You don't get a prompt on the Oasis about connecting? Or try another USB port if available.

[twitch2021]

The only thing that happens when I plug it into any USB port on 2 different laptops is that the Oasis starts charging. Nothing else happens on the Oasis and the computer seems to have no idea anything was plugged in (even checking Device Manager). The only think haven’t tried is another MicroUSB cable (because who just has these lying around) but I’ll try picking up a new one today and see if that’s it. Otherwise I have no idea.

But yeah, either way, I can’t do anything with my books haha.