Calibre will not start

viv.aretusi · 03-03-2021, 06:24 PM

Hi,
I am using Windows 10 (64 bit). Have used Calibre for years. Never had an issue.

5.11 was working fine. Then all of a sudden would not start. Tried uninstalling, restart and installing. Even tried going back to version 4.23 (which worked absolutely fine before installing 5.11) but same issue. No start and no error message.

Please see debug log below:

calibre 5.11 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Turning on automatic hidpi scaling

Any thoughts on what could be the issue?

theducks · 03-03-2021, 08:34 PM

Try updating your video driver.

ownedbycats · 03-03-2021, 09:09 PM

Another thing to try is to download the portable version of Calibre. If that starts, it may be a configuration issue.

JSWolf · 03-04-2021, 06:45 AM

Quote:

Originally Posted by ownedbycats

Another thing to try is to download the portable version of Calibre. If that starts, it may be a configuration issue.

That is a rather good idea to try.

viv.aretusi · 03-04-2021, 09:09 AM

Quote:

Originally Posted by JSWolf

That is a rather good idea to try.

Downloaded Calibre Portable will not start either.....

rwmcafee · 03-04-2021, 03:16 PM

Just a guess, but try setting your 'Adjust for high resolution screens' to OFF.

I noticed that my 5.12 version shows it to being set to AUTOMATIC. Which is interesting because I've never set it to anything before.

This setting is in the Look and feel tab in Preferences.

Note: I just updated to 5.12 because of a certain app that i use a lot. ;-)

I'm not sure how to do this setting change if you can't get the program to start. Someone else will have to help you with that.

JSWolf · 03-04-2021, 03:23 PM

Try rebooting to safe mode and see if Calibre runs.

kovidgoyal · 03-04-2021, 09:47 PM

reboot in safe mode and check if it works there.

zavroshellstrand · 03-07-2021, 01:28 AM

I have the same issue, Calibre won't start.
Everything I have gathered so far,
-It launches in Safe Mode just fine.
-I have disabled all startup programs in Task Manager but it still doesn't launch.
-Calibre 32-bit also doesn't launch, nor does Calibre Portable.

I will also say that whatever the problem is, it could have only occurred by itself as it worked fine when I turned my computer on and launched it this morning(12 hours ago). It launched just fine and I wrote some metadata for some books and then left for work. When I came back from work and I tried to open a book it wouldn't and so I tried restarting the program and it wouldn't launch, thus starting my troubleshooting process.

Debug:
calibre 5.12 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: Count Pages (1, 11, 0) && FanFicFare (4, 0, 2) && Generate Cover (2, 0, 2) && Kindle Collections (1, 7, 29)
Turning on automatic hidpi scaling

kovidgoyal · 03-07-2021, 02:26 AM

if it is working in safe mode that means some program is interfering. typical cuprits are anti-virus programs. try disabling those.

zavroshellstrand · 03-07-2021, 12:57 PM

Disabling my Anti-Virus did nothing, I tried both turning off every setting in the anti-virus and also killing the entire program through task manager, neither helped.

zavroshellstrand · 03-07-2021, 02:00 PM

Nevermind, It was some weird driver thing that I solved through a complete graphics driver re-installation. Works fine now.

JSWolf · 03-07-2021, 08:00 PM

Quote:

Originally Posted by zavroshellstrand

Nevermind, It was some weird driver thing that I solved through a complete graphics driver re-installation. Works fine now.

Well done! It's good to know for advise for others to possibly fix a non-working Calibre.

03-03-2021, 06:24 PM	#1
viv.aretusi Junior Member Posts: 2 Karma: 10 Join Date: Feb 2021 Device: Kindle, Calibre	Calibre will not start Hi, I am using Windows 10 (64 bit). Have used Calibre for years. Never had an issue. 5.11 was working fine. Then all of a sudden would not start. Tried uninstalling, restart and installing. Even tried going back to version 4.23 (which worked absolutely fine before installing 5.11) but same issue. No start and no error message. Please see debug log below: calibre 5.11 [64bit] embedded-python: True is64bit: True Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.19041') Python 3.8.5 Windows: ('10', '10.0.19041', '', 'Multiprocessor Free') Interface language: None Turning on automatic hidpi scaling Any thoughts on what could be the issue?

03-04-2021, 03:16 PM	#6
rwmcafee Connoisseur Posts: 56 Karma: 2024 Join Date: Apr 2011 Location: Southern Idaho Device: Samsung Galaxy Tabs	Just a guess, but try setting your 'Adjust for high resolution screens' to OFF. I noticed that my 5.12 version shows it to being set to AUTOMATIC. Which is interesting because I've never set it to anything before. This setting is in the Look and feel tab in Preferences. Note: I just updated to 5.12 because of a certain app that i use a lot. ;-) I'm not sure how to do this setting change if you can't get the program to start. Someone else will have to help you with that. Last edited by rwmcafee; 03-04-2021 at 03:21 PM.

03-07-2021, 01:28 AM	#9
zavroshellstrand Junior Member Posts: 3 Karma: 10 Join Date: Mar 2021 Device: Various	same issue I have the same issue, Calibre won't start. Everything I have gathered so far, -It launches in Safe Mode just fine. -I have disabled all startup programs in Task Manager but it still doesn't launch. -Calibre 32-bit also doesn't launch, nor does Calibre Portable. I will also say that whatever the problem is, it could have only occurred by itself as it worked fine when I turned my computer on and launched it this morning(12 hours ago). It launched just fine and I wrote some metadata for some books and then left for work. When I came back from work and I tried to open a book it wouldn't and so I tried restarting the program and it wouldn't launch, thus starting my troubleshooting process. Debug: calibre 5.12 [64bit] embedded-python: True is64bit: True Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.19041') Python 3.8.5 Windows: ('10', '10.0.19041', '', 'Multiprocessor Free') Interface language: None Successfully initialized third party plugins: Count Pages (1, 11, 0) && FanFicFare (4, 0, 2) && Generate Cover (2, 0, 2) && Kindle Collections (1, 7, 29) Turning on automatic hidpi scaling

03-07-2021, 02:00 PM	#12
zavroshellstrand Junior Member Posts: 3 Karma: 10 Join Date: Mar 2021 Device: Various	solved Nevermind, It was some weird driver thing that I solved through a complete graphics driver re-installation. Works fine now.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Long time Calibre user/ now Calibre will NOT start	Nobull56	Calibre	3	08-07-2017 08:13 PM
Calibre 1.30.0 will not start	VocaLizard	Calibre	6	04-03-2014 10:15 AM
Can not start recoll from calibre /opt/calibre/lib/libz.so.1: no version information	Satas	Development	5	04-19-2013 11:22 PM
Calibre wont start (first time start up)	Mike Railton	Devices	15	05-25-2012 02:14 AM
Can't start Calibre	Cor Wessels	Calibre	1	04-05-2010 07:48 AM

03-03-2021, 08:34 PM	#2
theducks Well trained by Cats Posts: 31,047 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Try updating your video driver.

03-03-2021, 09:09 PM	#3
ownedbycats Custom User Title Posts: 10,970 Karma: 75337983 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Another thing to try is to download the portable version of Calibre. If that starts, it may be a configuration issue.

03-04-2021, 03:23 PM	#7
JSWolf Resident Curmudgeon Posts: 79,745 Karma: 145864619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	Try rebooting to safe mode and see if Calibre runs.

03-04-2021, 09:47 PM	#8
kovidgoyal creator of calibre Posts: 45,345 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	reboot in safe mode and check if it works there.

03-07-2021, 02:26 AM	#10
kovidgoyal creator of calibre Posts: 45,345 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	if it is working in safe mode that means some program is interfering. typical cuprits are anti-virus programs. try disabling those.

03-07-2021, 12:57 PM	#11
zavroshellstrand Junior Member Posts: 3 Karma: 10 Join Date: Mar 2021 Device: Various	Disabling my Anti-Virus did nothing, I tried both turning off every setting in the anti-virus and also killing the entire program through task manager, neither helped.

Advert

Advert