DeDRM issue, cannot remove DRM from ADE 4.5.12.112, DeDRM 7.2.1, Calibre 9.4.0

[agentcooper000]

Downloaded an IT textbook (HPE) but the DeDRM plugin will not remove the DRM (using latest Calibre Portable)

Any help would be appreciated as I'm not sure what the issue is, though the primary issue seems to be related to this statement:
DeDRM v7.2.1: “HPE ASE - Compute Solutions Second Edition_PE28482_20458.epub” is neither an Adobe Adept nor a Barnes & Noble encrypted ePub

The full log is:
ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
calibre Debug log
calibre 9.4 Portable embedded-python: True
Windows-11-10.0.22631-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.22631')
Python 3.14.2
Windows: ('11', '10.0.22631', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Calibre Portable\Calibre Portable\Calibre\calibre-debug.exe
Successfully initialized third party plugins: DeDRM (7, 2, 1)
calibre 9.4 Portable embedded-python: True
Windows-11-10.0.22631-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.22631')
Python 3.14.2
Windows: ('11', '10.0.22631', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Calibre Portable\Calibre Portable\Calibre\calibre-debug.exe
Successfully initialized third party plugins: DeDRM (7, 2, 1)
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...
[1.24] splash screen shown
[1.25] Initializing db...
[1.26] db initialized
[1.26] Constructing main UI...
[1.61] GUI main window shown
[1.75] main UI initialized...
[1.75] Hiding splash screen
[1.76] splash screen hidden
[1.76] Started up in 1.76 seconds with 4 books
DeDRM v7.2.1: Trying to decrypt HPE ASE - Compute Solutions Second Edition_PE28482_20458.epub
DeDRM v7.2.1: Verifying zip archive integrity
DeDRM v7.2.1: “HPE ASE - Compute Solutions Second Edition_PE28482_20458.epub” is neither an Adobe Adept nor a Barnes & Noble encrypted ePub
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre\customize\ui.py", line 236, in _run_filetype_plugins
File "calibre_plugins.dedrm.init", line 644, in run
File "calibre_plugins.dedrm.init", line 420, in ePubDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v7.2.1: Couldn't decrypt after 0.3 seconds. DRM free perhaps?
stdout+stderr from file dialog helper: [b'', b'']
piped data from file dialog helper: [b'j^<\xd3X\xbc\x9f\x8d\xc0\x1e\x1a\x13\x9f\x06\xca!\xc3\x9a\n\x85c}B\xe2\x02[\xbahFoe\x91', b'C:\Users\scotjohn\Downloads\HPE ASE - Compute Solutions Second Edition_PE28482_20458.epub']
Added HPE ASE - Compute Solutions Second Edition_PE28482_20458 to db in: 0.2
Added 1 books in 0.9 seconds
Failed to count pages in book: 6 EPUB because it is DRM locked
Worker Launch took: 0.01 seconds
[121.93] Shutdown starting...
[121.95] Shutdown message shown...
[121.95] Grid view shutdown
[121.95] Bookshelf view shutdown
[121.95] Actions shutdown
[122.16] Various services shutdown
[122.16] Metadata backup shutdown
[122.30] Current database closed
[122.32] Windows hidden
[122.36] Waiting for overseers, mdns, and live to shutdown
[122.36] Waiting for device manager to shutdown
[122.36] Shutdown complete in 0.43, quitting...

[ElleKayEm]

Try DeDRM 10.0.9: https://github.com/noDRM/DeDRM_tools/releases/tag/v10.0.9

[agentcooper000]

Thank you very much for your quick response!!!

Using the version you recommended, 10.0.9, it worked perfectly!
Again, much appreciated.
Have a great week.