Calibre no longe launching in Windows 11

MoonReader · 01-25-2023, 11:56 PM

Suddenly 64 bit Calibre stopped working for me. When I try launching, nothing happens. No Calibre entry appears in Task Manager. I uninstalled and reinstalled 6.11 (64 bit) and rebooted several times. Nothing has worked. Below is my debug screen. Any help would be greatly appreciated. Thank you.

Spoiler:

DNSB · 01-26-2023, 12:38 AM

Quote:

Originally Posted by MoonReader

Suddenly 64 bit Calibre stopped working for me. When I try launching, nothing happens. No Calibre entry appears in Task Manager. I uninstalled and reinstalled 6.11 (64 bit) and rebooted several times. Nothing has worked. Below is my debug screen. Any help would be greatly appreciated. Thank you.

Spoiler:

Did you try the suggestion in the thread in this forum called Calibre not launching. NUL file missing in windows or the oldest thread I could find when I did a forum search on "NUL file missing in windows" (the quotes are needed) which is Calibre Won't Run from Jan.,2012. The advice given at Nuls R Us was intended for Windows XP and does not work on later Windows versions.

You could even use a Google search for "NUL file missing in windows" site:mobileread.com to get even more search results from multiple MobileRead forums.

MoonReader · 01-26-2023, 12:52 AM

Quote:

Originally Posted by DNSB

Did you try the suggestion in the thread in this forum called Calibre not launching. NUL file missing in windows or the oldest thread I could find when I did a forum search on "NUL file missing in windows" (the quotes are needed) which is Calibre Won't Run from Jan.,2012. The advice given at Nuls R Us was intended for Windows XP and does not work on later Windows versions.

You could even use a Google search for "NUL file missing in windows" site:mobileread.com to get even more search results from multiple MobileRead forums.

Thank you very much!

The registry key change solved the problem.

DNSB · 01-26-2023, 12:13 PM

Good to hear that it worked for you.

01-25-2023, 11:56 PM	#1
MoonReader Junior Member Posts: 2 Karma: 10 Join Date: Jan 2023 Device: none	Calibre no longe launching in Windows 11 Suddenly 64 bit Calibre stopped working for me. When I try launching, nothing happens. No Calibre entry appears in Task Manager. I uninstalled and reinstalled 6.11 (64 bit) and rebooted several times. Nothing has worked. Below is my debug screen. Any help would be greatly appreciated. Thank you. Spoiler: Microsoft Windows [Version 10.0.22621.1105] (c) Microsoft Corporation. All rights reserved. calibre 6.11 embedded-python: True Windows-10-10.0.22621-SP0 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.22621') Python 3.10.1 Windows: ('10', '10.0.22621', 'SP0', 'Multiprocessor Free') Interface language: None Successfully initialized third party plugins: DeDRM (10, 0, 3) && Modify ePub (1, 8, 1) QPA platform: windows devicePixelRatio: 1.25 logicalDpi: 96.0 x 96.0 physicalDpi: 126.26019417475726 x 126.85317919075145 ApplicationPaletteChange event ignored Using calibre Qt style: True ApplicationPaletteChange event received Traceback (most recent call last): File "calibre\utils\ipc\launch.py", line 18, in <module> FileNotFoundError: [Errno 2] No such file or directory: 'nul' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "runpy.py", line 196, in _run_module_as_main File "runpy.py", line 86, 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\debug.py", line 230, in main File "calibre\gui_launch.py", line 73, in calibre File "calibre\gui2\main.py", line 553, in main File "calibre\gui2\main.py", line 565, in run_main File "calibre\gui2\main.py", line 403, in run_gui File "calibre\gui2\main.py", line 413, in run_gui_ File "<frozen importlib._bootstrap>", line 1027, in _find_and_load File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 688, in _load_unlocked File "bypy-importer.py", line 279, in exec_module File "calibre\gui2\ui.py", line 46, in <module> File "<frozen importlib._bootstrap>", line 1027, in _find_and_load File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 688, in _load_unlocked File "bypy-importer.py", line 279, in exec_module File "calibre\gui2\jobs.py", line 22, in <module> File "<frozen importlib._bootstrap>", line 1027, in _find_and_load File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 688, in _load_unlocked File "bypy-importer.py", line 279, in exec_module File "calibre\utils\ipc\server.py", line 23, in <module> File "<frozen importlib._bootstrap>", line 1027, in _find_and_load File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 688, in _load_unlocked File "bypy-importer.py", line 279, in exec_module File "calibre\utils\ipc\launch.py", line 20, in <module> RuntimeError: NUL file missing in windows. This indicates a corrupted windows. You should contact Microsoft for assistance and/or follow the steps described here: https://bytes.com/topic/net/answers/...device-missing Last edited by theducks; 01-26-2023 at 09:40 AM. Reason: spoilered log

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01-26-2023, 12:13 PM	#4
DNSB Bibliophagist Posts: 35,458 Karma: 145525534 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Forma, Clara HD, Lenovo M8 FHD, Paperwhite 4, Tolino epos	Good to hear that it worked for you.

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