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

[Jhaedee]

Is there any workaround for this or is it just that the book isn't able to be decrypted?

From the elevated CMD window I ran this in:

_C:\Windows\system32>C:\Sysinternals\procdump.exe -ma Kindle C:\Users%USERNAME%\AppData\Local\Amazon\Kindle\application\Kindle

ProcDump v11.0 - Sysinternals process dump utility
Copyright (C) 2009-2022 Mark Russinovich and Andrew Richards
Sysinternals - www.sysinternals.com

[15:04:49] Dump 1 initiated: C:\Users\GUESTUSER\AppData\Local\Amazon\Kindle\application\Kindle.dmp
[15:04:50] Dump 1 writing: Estimated dump file size is 691 MB.
[15:04:50] Dump 1 complete: 692 MB written in 1.2 seconds
[15:04:51] Dump count reached.

C:\Windows\system32>CD /d C:\Users%USERNAME%\AppData\Local\Amazon\Kindle\application

C:\Users\GUESTUSER\AppData\Local\Amazon\Kindle\application>krfkeyextractor.exe Kindle.DMP "C:\Users%USERNAME%\Documents\My Kindle Content" kindlekey.file
Fontconfig error: Cannot load default config file
offsetaddr fe9de397
Scanning dump file
Trying to open Kindle.DMP
Trying to open B0CZGKVFJH_EBOK
Bookname C:\Users\GUESTUSER\Documents\My Kindle Content\B0CZGKVFJH_EBOK\B0CZPKVFJH_EBOK.azw
Resource C:\Users\GUESTUSER\Documents\My Kindle Content\B0CZPKVFJH_EBOK\CR!REDACTED.azw.res
BookOpen error 14 Missing magic bytes
Invalid book format, maybe MOBI?
Note: the below can be copied into text file and used instead of full memory dump. At least one of the secrets is likely to be spurious/incorrect._

[ElleKayEm]

Not kfx format perhaps? In which case, try using normal DeDRM method. Not finding either ASIN when trying to look for the book's product page to see if that might give me a clue.

[ElleKayEm]

Under the preferences menu, restart in debug mode.

[Jhaedee]

ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
calibre Debug log
calibre 8.5 embedded-python: True
Windows-10-10.0.19045-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19045')
Python 3.11.12
Windows: ('10', '10.0.19045', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (2, 25, 0) && DeDRM (10, 0, 11) && Package KFX (from KFX Input) (2, 25, 0) && KFX metadata reader (from KFX Input) (2, 25, 0) && From KFX (2, 25, 0) && KFX Input (2, 25, 0) && Obok DeDRM (7, 2, 1)
calibre 8.5 embedded-python: True
Windows-10-10.0.19045-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19045')
Python 3.11.12
Windows: ('10', '10.0.19045', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (2, 25, 0) && DeDRM (10, 0, 11) && Package KFX (from KFX Input) (2, 25, 0) && KFX metadata reader (from KFX Input) (2, 25, 0) && From KFX (2, 25, 0) && KFX Input (2, 25, 0) && Obok DeDRM (7, 2, 1)
QPA platform: windows
devicePixelRatio: 1.25
logicalDpi: 96.0 x 96.0
physicalDpi: 116.1142857142857 x 116.1142857142857
[0.00] Starting up...
[0.00] Showing splash screen...
[1.20] splash screen shown
[1.20] Initializing db...
[1.28] db initialized
[1.28] Constructing main UI...
DEBUG: 0.0 obok::utilities.py - loading translations
DEBUG: 0.0 obok::dialogs.py - loading translations
DEBUG: 0.0 obok::config.py - loading translations
DEBUG: 0.0 obok::action_err.py - loading translations
[2.94] GUI main window shown
[3.01] main UI initialized...
[3.01] Hiding splash screen
[3.01] splash screen hidden
[3.01] Started up in 3.01 seconds with 3 books
Gather KFX-ZIP (from KFX Input) 2.25.0: Importing C:/Users/GUESTUSER/Documents/My Kindle Content/B0CZPJWFJH_EBOK/B0CZPJWFJH_EBOK.azw
Gather KFX-ZIP (from KFX Input): Book is not KFX format
DeDRM v10.0.11: Trying to decrypt B0CZPJWFJH_EBOK.azw
MobiDeDrm v1.1.
Copyright © 2008-2022 The Dark Reverser, Apprentice Harper et al.
Decrypting Kindle Format 8 ebook: Star Wars The Acolyte Visual Guide
Found 0 keys to try after 0.8 seconds
Crypto Type is: 2
DeDRM v10.0.11: Failed to decrypt with error: No key found in 0 PIDs tried.
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 950, in KindleMobiDecrypt
File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 204, in GetDecryptedBook
File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\mobidedrm.py", line 445, in processBook
mobidedrm.DrmException: No key found in 0 PIDs tried.
DeDRM v10.0.11: Looking for new default Kindle Key after 0.8 seconds
searching for kinfoFiles in C:\Users\GUESTUSER\AppData\Local
No K4PC kindle.info/kinf/kinf2011 files have been found.
DeDRM v10.0.11: Ultimately failed to decrypt after 0.8 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 950, in KindleMobiDecrypt
File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 204, in GetDecryptedBook
File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\mobidedrm.py", line 445, in processBook
mobidedrm.DrmException: No key found in 0 PIDs tried.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\customize\ui.py", line 214, in _run_filetype_plugins
File "calibre_plugins.dedrm.init", line 1052, in run
File "calibre_plugins.dedrm.init", line 1003, in KindleMobiDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.11: Ultimately failed to decrypt after 0.8 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Added Star Wars The Acolyte Visual Guide to db in: 0.1
Added 1 books in 2.2 seconds
Worker Launch took: 0.06 seconds
Job: 0 Convert book 1 of 1 (Star Wars The Acolyte Visual Guide) finished
Convert book 1 of 1 (Star Wars The Acolyte Visual Guide)

DeDRM v10.0.11: Trying to decrypt _449jw_w.azw
MobiDeDrm v1.1.
Copyright © 2008-2022 The Dark Reverser, Apprentice Harper et al.
Decrypting Kindle Format 8 ebook: Star Wars The Acolyte Visual Guide
Found 0 keys to try after 0.8 seconds
Crypto Type is: 2
DeDRM v10.0.11: Failed to decrypt with error: No key found in 0 PIDs tried.
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 950, in KindleMobiDecrypt
  File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 204, in GetDecryptedBook
  File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\mobidedrm.py", line 445, in processBook
mobidedrm.DrmException: No key found in 0 PIDs tried.
DeDRM v10.0.11: Looking for new default Kindle Key after 0.8 seconds
searching for kinfoFiles in C:\Users\GUESTUSER\AppData\Local
No K4PC kindle.info/kinf/kinf2011 files have been found.
DeDRM v10.0.11: Ultimately failed to decrypt after 0.8 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Running file type plugin DeDRM failed with traceback:

Traceback (most recent call last):

  File "calibre_plugins.dedrm.__init__", line 950, in KindleMobiDecrypt

  File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 204, in GetDecryptedBook

  File "C:\Users\GUESTUSER\AppData\Roaming\calibre\plugins\DeDRM.zip\mobidedrm.py", line 445, in processBook

mobidedrm.DrmException: No key found in 0 PIDs tried.

[ElleKayEm]

Was there any text in that "Note the below blah blah" at the end of your 1st post? If so, did you put it in DeDRM? Do you have other books downloaded with this version of Kindle for PC? I am a little stumped as I haven't dealt with books from the latest K4PC myself. But I would think you should be able to get this. Someone else may need to help out here though.

[Satsuoni]

So, the problematic lines in your logs are:

Gather KFX-ZIP (from KFX Input): Book is not KFX format
Decrypting Kindle Format 8 ebook: Star Wars The Acolyte Visual Guide
Found 0 keys to try after 0.8 seconds
Crypto Type is: 2
DeDRM v10.0.11: Failed to decrypt with error: No key found in 0 PIDs tried.

Which is to say, the book is an older, KF8 format and it needs keys from Kindle, but apparently cannot get it, probably because kinf2024 cannot be imported. I never had problem with KF8 Mobi books, so I am not sure (muy calibre retains key file from previous version of K4PC), but here is what you can try:

After running krfkeyextractor, do you see device_serial_number in the end? Try adding that to kindle eink list, and reimporting book. If that does not work, I guess I can pack DSN and secrets into fake k4i file and try that out (as in, make utility spit out k4i file to be imported into Calibre). If that does not work, I don't know.

[Satsuoni]

Try this one out. Generate k4i by adding name of the file (will be overwritten) as a 4th argument to the tool, then try adding it in Calibre if you don't have kindle keys. Post logs if it does not work.

[adampalli]

Hi. I'm facing the same issue.

From the command prompt:

C:\Windows\system32>KRFKeyExtractor.exe Kindle.DMP "C:\Users\USER\Downloads\rip" kindlekey.file my_kindle_key.k4i
C:\Users\USER\Downloads\rip
Fontconfig error: Cannot load default config file
offsetaddr fe9de397
Scanning dump file
Trying to open Kindle.DMP
Trying to open [ASIN]_EBOK
Bookname C:\Users\USER\Downloads\rip[ASIN]_EBOK[ASIN]_EBOK.azw
BookOpen error 14 Missing magic bytes
Invalid book format, maybe MOBI?
Note: the below can be copied into text file and used instead of full memory dump. At least one of the secrets is likely to be spurious/incorrect.

Calibre Logs

ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
calibre Debug log
calibre 9.2.1 Portable embedded-python: True
Windows-11-10.0.xxxxx-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.xxxxx')
Python 3.14.2
Windows: ('11', '10.0.xxxxx', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Users\USER\Downloads\Calibre Portable\Calibre\calibre-debug.exe
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (2, 29, 0) && DeDRM (10, 0, 12) && Package KFX (from KFX Input) (2, 29, 0) && KFX metadata reader (from KFX Input) (2, 29, 0) && From KFX (2, 29, 0) && KFX Input (2, 29, 0)
QPA platform: windows
devicePixelRatio: 1.5
[0.00] Starting up...
[1.23] Initializing db...
[1.27] db initialized
[4.95] GUI main window shown
[5.18] Started up in 5.18 seconds with 142 books
Gather KFX-ZIP (from KFX Input) 2.29.0: Importing C:/Users/USER/Downloads/rip/B0GLTH61ZW_EBOK/B0GLTH61ZW_EBOK.azw
Gather KFX-ZIP (from KFX Input): Book is not KFX format
DeDRM v10.0.12: Trying to decrypt B0GLTH61ZW_EBOK.azw
MobiDeDrm v1.1.
Copyright © 2008-2022 The Dark Reverser, Apprentice Harper et al.
Decrypting Kindle Format 8 ebook: [BOOK_TITLE_REDACTED]
Found 0 keys to try after 0.5 seconds
Crypto Type is: 2
DeDRM v10.0.12: Failed to decrypt with error: No key found in 0 PIDs tried.
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 950, in KindleMobiDecrypt
File "C:\Users\USER\Downloads\Calibre Portable\Calibre Settings\plugins\DeDRM.zip\k4mobidedrm.py", line 204, in GetDecryptedBook
File "C:\Users\USER\Downloads\Calibre Portable\Calibre Settings\plugins\DeDRM.zip\mobidedrm.py", line 445, in processBook
mobidedrm.DrmException: No key found in 0 PIDs tried.
DeDRM v10.0.12: Looking for new default Kindle Key after 0.5 seconds
searching for kinfoFiles in C:\Users\USER\AppData\Local
No K4PC kindle.info/kinf/kinf2011 files have been found.
DeDRM v10.0.12: Ultimately failed to decrypt after 0.5 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 950, in KindleMobiDecrypt
...
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.12: Ultimately failed to decrypt after 0.5 seconds.
Failed to count pages in book: 149 AZW because it is DRM locked
Added [BOOK_TITLE_REDACTED] to db in: 0.1
Added 1 books in 1.6 seconds
[57.13] Shutdown complete in 0.38, quitting...

Ebook Link for reference
https://www.amazon.in/Jesus-Deception-Mystical-Midrashic-Myth-ebook/dp/B0GLTH61ZW/

[ElleKayEm]

Looks like you are using old versions. For Kindle for PC 2.8.0, use the tool included with DeDRM 10.0.15. You'll need to have at least one kfx book besides this older format one. Import the k4i file in the Kindle for Mac/PC section of DeDRM's customization.

[adampalli]

Looks like you are using old versions. For Kindle for PC 2.8.0, use the tool included with DeDRM 10.0.15. You'll need to have at least one kfx book besides this older format one. Import the k4i file in the Kindle for Mac/PC section of DeDRM's customization.

Thank you so much for the guidance. I was able to successfully do it after using DeDRM 10.0.15 and importing k4i file in the Kindle for Mac/PC section of DeDRM's customization.

[ElleKayEm]

Glad you got it working. Thanks for reporting back!