Discussions

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  Error: Unhandled exception - DISREGARD

  ladfm asked Mar 4, 2026 in Q&A · Closed · Unanswered

  

  

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  New tool for K4PC2.8

  Satsuoni started Sep 22, 2025 in General

  

  

  

  

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  v10.0.17

  Satsuoni announced Feb 21, 2026 in Announcements

  

  

  

  

  27
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  Help Understanding ADE DRM on PDF and EPUB

  joedahill asked Feb 28, 2026 in Q&A · Answered

  

  

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  Unable to decrypt books published since 24/02/2026

  localizermeerkat asked Feb 26, 2026 in Q&A · Unanswered

  

  

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  Does the current version require Kindle for PC, meaning macOS users can no longer use this plugin with Calibre?

  Tamarissa asked Feb 14, 2026 in Q&A · Answered

  

  

  

  

  19
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  invalid plug in message calibre 9.2.1

  teatringestazione asked Feb 20, 2026 in Q&A · Answered

  

  

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  What's different in this fork, which is lacking in the original?

  jibin23 started Feb 17, 2026 in General

  

  

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  DeDRM not working on a new book released 10/24/25

  Freshenstein started Oct 25, 2025 in General

  

  

  

  

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  BookOpen error 14 Missing magic bytes, Invalid book format, maybe MOBI?

  Jhaedee asked Jun 26, 2025 in Q&A · Unanswered

  

  

  

  

  15
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  Kindle Book Downloading as AZW - Key Extractor Can't De-DRM

  misshelenjune asked Feb 11, 2026 in Q&A · Answered

  

  

  

  

  22
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  KFXKeyExtractor28.exe crashes only on this book

  lovefool started Feb 11, 2026 in General · Closed

  

  

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  Having trouble removing DRM from Kindle Book using Calibre

  Katypus asked Feb 7, 2026 in Q&A · Unanswered

  

  

  

  

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  Error with eink kfx files

  stonewalljones asked Feb 9, 2026 in Q&A · Unanswered

  

  

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  K4PC just updated and now I can't decrypt books.

  luigirovatti started Feb 6, 2026 in General

  

  

  

  

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  New Calibre Ver 9.0

  rjdenat started Jan 30, 2026 in General

  

  

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  KeyExtractor28 seems to work, but books import as KFX and KFX Plugins installed

  charles-slc asked Jan 13, 2026 in Q&A · Answered

  

  

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  Can't remove DRM from e-Ink Device file

  jieverson asked Jan 7, 2026 in Q&A · Answered

  

  

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  Failed to pull Key on Secondary Use Case from Kindle PC

  Comrade-Assaultron asked Jan 3, 2026 in Q&A · Answered

  

  

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  De-DRM Stopped Working on KFX-ZIP

  misshelenjune asked Jan 2, 2026 in Q&A · Closed · Answered

  

  

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  Books stopped converting – has the DRM changed?

  sychrobeep asked Dec 25, 2025 in Q&A · Unanswered

  

  

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  Unable to run KFXKeyExtractor28.exe

  ladfm started Oct 7, 2025 in General

  

  

  

  

  11
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  v10...15 does not work with azw8 files

  NearlyNormal asked Nov 24, 2025 in Q&A · Unanswered

  

  

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  Repo Exposure

  PastelSpoonie started Nov 4, 2025 in General

  

  

  

  

  9
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  KFXKeyExtractor28 does not work

  waterscaped started Nov 4, 2025 in General

  

  

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