DeDRM not possible for amazon books

Question / bug report

Until last week I had no problem with converting my books. Then I updated my Calibre to the latest Version (7.18). I installed all the plug-ins but it was not possible to DeDRM my books. I switched back to the old verion (7.16) with which I had no problems before but am still not able.

Which version of Calibre are you running?

7.16

Which version of the DeDRM plugin are you running?

v.10.0.9

If applicable, which version of the Kindle software are you running?

2.5.0

Log output

ApplicationPaletteChange event ignored Using calibre Qt style: True ApplicationPaletteChange event received calibre Fehlerdiagnoseprotokoll calibre 7.15 embedded-python: True Windows-10-10.0.22621-SP0 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.22621') Python 3.11.5 Windows: ('10', '10.0.22621', 'SP0', 'Multiprocessor Free') Interface language: de EXE path: C:\Program Files\Calibre2\calibre-debug.exe Successfully initialized third party plugins: DeDRM (10, 0, 9) calibre 7.15 embedded-python: True Windows-10-10.0.22621-SP0 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.22621') Python 3.11.5 Windows: ('10', '10.0.22621', 'SP0', 'Multiprocessor Free') Interface language: de EXE path: C:\Program Files\Calibre2\calibre-debug.exe Successfully initialized third party plugins: DeDRM (10, 0, 9) QPA platform: windows devicePixelRatio: 1.0 logicalDpi: 96.0 x 96.0 physicalDpi: 108.91792294807368 x 108.85714285714285 [0.00] Starting up... [0.00] Showing splash screen... [0.16] splash screen shown [0.16] Initializing db... [0.19] db initialized [0.19] Constructing main UI... [0.48] GUI main window shown [0.55] main UI initialized... [0.55] Hiding splash screen [4.66] splash screen hidden [4.66] Started up in 4.66 seconds with 2 books Worker Launch took: 0.02 seconds Job: 0 Buch 1 von 1 (B00GLVJ79M EBOK) konvertieren finished Buch 1 von 1 (B00GLVJ79M EBOK) konvertieren DeDRM v10.0.9: Trying to decrypt 3uma2jf4.azw DeDRM v10.0.9: Failed to decrypt with error: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required. DeDRM v10.0.9: Looking for new default Kindle Key after 0.6 seconds searching for kinfoFiles in C:\Users\Anwender\AppData\Local Found K4PC 1.25+ kinf2018 file: C:\Users\Anwender\AppData\Local\Amazon\Kindle\storage.kinf2018 Decrypted key file using IDString '513612208' and UserName 'Anwender' DeDRM v10.0.9: Found 1 new key Traceback (most recent call last): File "calibre_plugins.dedrm.init", line 931, in KindleMobiDecrypt File "C:\Users\Anwender\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 170, in GetDecryptedBook k4mobidedrm.DrmException: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 965, in KindleMobiDecrypt
  File "C:\Users\Anwender\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 170, in GetDecryptedBook
k4mobidedrm.DrmException: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.
DeDRM v10.0.9: 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 931, in KindleMobiDecrypt
  File "C:\Users\Anwender\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 170, in GetDecryptedBook
k4mobidedrm.DrmException: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre\customize\ui.py", line 199, in _run_filetype_plugins
  File "calibre_plugins.dedrm.__init__", line 1030, in run
  File "calibre_plugins.dedrm.__init__", line 981, in KindleMobiDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.9: 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
Conversion options changed from defaults:
  output_profile: 'cybook_opus'
  verbose: 2
  read_metadata_from_opf: 'C:\\Users\\Anwender\\AppData\\Local\\Temp\\calibre_110z8_2o\\3uzrh2mq.opf'
Resolved conversion options
calibre version: 7.15.0
{'add_alt_text_to_img': False,
 'asciiize': False,
 'author_sort': None,
 'authors': None,
 'base_font_size': 0.0,
 'book_producer': None,
 'change_justification': 'original',
 'chapter': "//*[((name()='h1' or name()='h2') and re:test(., "
            "'\\s*((chapter|book|section|part)\\s+)|((prolog|prologue|epilogue)(\\s+|$))', "
            "'i')) or @class = 'chapter']",
 'chapter_mark': 'pagebreak',
 'comments': None,
 'cover': None,
 'debug_pipeline': None,
 'dehyphenate': True,
 'delete_blank_paragraphs': True,
 'disable_font_rescaling': False,
 'dont_split_on_page_breaks': False,
 'duplicate_links_in_toc': False,
 'embed_all_fonts': False,
 'embed_font_family': None,
 'enable_heuristics': False,
 'epub_flatten': False,
 'epub_inline_toc': False,
 'epub_max_image_size': 'none',
 'epub_toc_at_end': False,
 'epub_version': '2',
 'expand_css': False,
 'extra_css': None,
 'extract_to': None,
 'filter_css': '',
 'fix_indents': True,
 'flow_size': 260,
 'font_size_mapping': None,
 'format_scene_breaks': True,
 'html_unwrap_factor': 0.4,
 'input_encoding': None,
 'input_profile': <calibre.customize.profiles.InputProfile object at 0x000002C3133ADD10>,
 'insert_blank_line': False,
 'insert_blank_line_size': 0.5,
 'insert_metadata': False,
 'isbn': None,
 'italicize_common_cases': True,
 'keep_ligatures': False,
 'language': None,
 'level1_toc': None,
 'level2_toc': None,
 'level3_toc': None,
 'line_height': 0.0,
 'linearize_tables': False,
 'margin_bottom': 5.0,
 'margin_left': 5.0,
 'margin_right': 5.0,
 'margin_top': 5.0,
 'markup_chapter_headings': True,
 'max_toc_links': 50,
 'minimum_line_height': 120.0,
 'no_chapters_in_toc': False,
 'no_default_epub_cover': False,
 'no_inline_navbars': False,
 'no_svg_cover': False,
 'output_profile': <calibre.customize.profiles.CybookOpusOutput object at 0x000002C3134AD990>,
 'page_breaks_before': "//*[name()='h1' or name()='h2']",
 'prefer_metadata_cover': False,
 'preserve_cover_aspect_ratio': False,
 'pretty_print': True,
 'pubdate': None,
 'publisher': None,
 'rating': None,
 'read_metadata_from_opf': 'C:\\Users\\Anwender\\AppData\\Local\\Temp\\calibre_110z8_2o\\3uzrh2mq.opf',
 'remove_fake_margins': True,
 'remove_first_image': False,
 'remove_paragraph_spacing': False,
 'remove_paragraph_spacing_indent_size': 1.5,
 'renumber_headings': True,
 'replace_scene_breaks': '',
 'search_replace': '[]',
 'series': None,
 'series_index': None,
 'smarten_punctuation': False,
 'sr1_replace': None,
 'sr1_search': None,
 'sr2_replace': None,
 'sr2_search': None,
 'sr3_replace': None,
 'sr3_search': None,
 'start_reading_at': None,
 'subset_embedded_fonts': False,
 'tags': None,
 'timestamp': None,
 'title': None,
 'title_sort': None,
 'toc_filter': None,
 'toc_threshold': 6,
 'toc_title': None,
 'transform_css_rules': '[]',
 'transform_html_rules': '[]',
 'unsmarten_punctuation': False,
 'unwrap_lines': True,
 'use_auto_toc': False,
 'verbose': 2}
DeDRM v10.0.9: Trying to decrypt 3uma2jf4.azw
DeDRM v10.0.9: Failed to decrypt with error: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.
DeDRM v10.0.9: Looking for new default Kindle Key after 0.0 seconds
searching for kinfoFiles in C:\Users\Anwender\AppData\Local
Found K4PC 1.25+ kinf2018 file: C:\Users\Anwender\AppData\Local\Amazon\Kindle\storage\.kinf2018
Decrypted key file using IDString '513612208' and UserName 'Anwender'
DeDRM v10.0.9: Found 1 new key
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\Anwender\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 170, in GetDecryptedBook
k4mobidedrm.DrmException: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 965, in KindleMobiDecrypt
  File "C:\Users\Anwender\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 170, in GetDecryptedBook
k4mobidedrm.DrmException: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.
DeDRM v10.0.9: Ultimately failed to decrypt after 0.1 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 931, in KindleMobiDecrypt
  File "C:\Users\Anwender\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 170, in GetDecryptedBook
k4mobidedrm.DrmException: The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre\customize\ui.py", line 199, in _run_filetype_plugins
  File "calibre_plugins.dedrm.__init__", line 1030, in run
  File "calibre_plugins.dedrm.__init__", line 981, in KindleMobiDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.9: Ultimately failed to decrypt after 0.1 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
InputFormatPlugin: MOBI Input running
on C:\Users\Anwender\AppData\Local\Temp\calibre_110z8_2o\3uma2jf4.azw
Traceback (most recent call last):
  File "calibre\ebooks\conversion\plugins\mobi_input.py", line 28, in convert
  File "calibre\ebooks\mobi\reader\mobi6.py", line 90, in __init__
calibre.ebooks.mobi.reader.mobi6.KFXError: Dies ist ein Amazon KFX-Buch. Es kann nicht verarbeitet werden. Weitere Informationen zum Umgang mit KFX-Büchern finden Sie unter https://www.mobileread.com/forums/showthread.php?t=283371.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "runpy.py", line 198, in _run_module_as_main
  File "runpy.py", line 88, in _run_code
  File "site.py", line 83, in <module>
  File "site.py", line 78, in main
  File "site.py", line 50, in run_entry_point
  File "calibre\utils\ipc\worker.py", line 215, in main
  File "calibre\gui2\convert\gui_conversion.py", line 38, in gui_convert_override
  File "calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
  File "calibre\ebooks\conversion\plumber.py", line 1129, in run
  File "calibre\customize\conversion.py", line 245, in __call__
  File "calibre\ebooks\conversion\plugins\mobi_input.py", line 34, in convert
  File "calibre\ebooks\mobi\reader\mobi6.py", line 90, in __init__
calibre.ebooks.mobi.reader.mobi6.KFXError: Dies ist ein Amazon KFX-Buch. Es kann nicht verarbeitet werden. Weitere Informationen zum Umgang mit KFX-Büchern finden Sie unter https://www.mobileread.com/forums/showthread.php?t=283371.

noDRM / DeDRM_tools