Calibre is not starting in Windows 10

[zancopanco]

Hi everyone,
I'll appreciate your help!

I followed the instructions outline in this post:
https://manual.calibre-ebook.com/faq...ing-on-windows

However, as it still wont launch, I started a command prompt: calibre-debug -g

I'm posting the output for your help. It seems like it has something to do with the 32 and 64 bit.

Thanks for your help.


Version 10.0.18362.418]
(c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\JuanReyes>calibre-debug -g
calibre 4.2 embedded-python: True is64bit: False
Windows-10-10.0.18362-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.18362')
Python 2.7.16+
Windows: ('10', '10.0.18362', 'SP0', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 18, 0) && DeDRM (6, 6, 1) && Package KFX (from KFX Input) (1, 18, 0) && KFX metadata reader (from KFX Input) (1, 18, 0) && KFX Input (1, 18, 0)
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 131.521035599 x 131.379310345
Using calibre Qt style: True
y t h o n f u n c t i o n t e r m i n a t e d u n e x p e c t e d l y
[ E r r o r 5 ] A c c e s s i s d e n i e d ( E r r o r C o d e : 1 )
Traceback (most recent call last):
File "site.py", line 114, in main
File "site.py", line 88, in run_entry_point
File "site-packages\calibre\debug.py", line 277, in main
File "site-packages\calibre\gui_launch.py", line 73, in calibre
File "site-packages\calibre\gui2\main.py", line 561, in main
File "site-packages\calibre\gui2\main.py", line 514, in create_listener
File "multiprocessing\connection.py", line 130, in __init__
File "multiprocessing\connection.py", line 342, in __init__
WindowsError: [Error 5] Access is denied

C:\Users\JuanReyes>

[kovidgoyal]

Something on your computer is blocking calibre from creating listening sockets to communicate with its worker processes. Most likely an antivirus/firewall/security program. Add an exception to it for calibre.exe and calibre_parallel.exe and you should be fine.