Calibre does not open Windows 11

urbasaurus · 01-30-2024, 12:12 PM

Hi!

I have installed the newest 64bit calibre in a new PC. I am unable to open the program. I've tried uninstalling/reinstalling, uninstalling and trying to use a portable version, opening via administrator.
I try to open the program and nothing happens. Nothing in task manager.

I have reviewed earlier posts but didnt help.

I am just a user but the cmd screen is rather short compared to other screenshots I have seen. Anybody can help?

kovidgoyal · 01-30-2024, 12:58 PM

reboot in safe mode then try to run calibre, see if it starts.

urbasaurus · 01-30-2024, 02:38 PM

I restarted in safe mode but the PC remained with a black screen and not really starting. I had to turn off using the hard reset.

I turned on the PC normally right away. I checked that there was no data loss or no other problem and tried to open Calibre. Now it works all the time (I have turned off and on a couple of times).

Thanks so much!!!!!

Aliandry · 01-31-2024, 01:08 PM

My Calibre won't open since I updated it yesterday as well. I tried to restart the pc in safe mode, could not open it then, cannot open it out of it either. I don't know what else to try. I've already "repaired" it.

theducks · 01-31-2024, 01:35 PM

Quote:

Originally Posted by Aliandry

My Calibre won't open since I updated it yesterday as well. I tried to restart the pc in safe mode, could not open it then, cannot open it out of it either. I don't know what else to try. I've already "repaired" it.

Check the Task Manager and see if it really is not running (after attempting the start).
It may just be off screen (although I would expect a taskbar icon)

urbasaurus · 01-31-2024, 03:11 PM

Unfortunately it doesnt work for me again. Now doesnt work even after the restart in safe mode.

JSWolf · 01-31-2024, 05:49 PM

Quote:

Originally Posted by urbasaurus

Unfortunately it doesnt work for me again. Now doesnt work even after the restart in safe mode.

Try updating your graphics card driver and see if that helps.

urbasaurus · 02-03-2024, 04:22 AM

I have downloaded the drivers from AMD and it seems to work after the first restart. I cross fingers that it will continue working. Thanks so much!!!

KariK · 06-20-2024, 09:32 AM

Hi,
I had the same issue after getting a Windows 11 system. My old one was Windows 10 and calibre ran fine there. Reinstalling calibre did not help. However, the comment about checking the taskbar made me check. Sure enough, there was a calibre icon there. Checked the Task Manager and the two calibre processes were there. Accessed the calibre server from my iPad and the server WAS running. So I right-clicked on the taskbar icon and chose Maximize. Whoa! Calibre came up in a full-screen mode and then worked normally from there on. So that was my fix, YMMV.

01-30-2024, 12:12 PM	#1
urbasaurus Junior Member Posts: 5 Karma: 12 Join Date: May 2016 Location: Brussels Device: Meebook P78 pro	Calibre does not open Windows 11 Hi! I have installed the newest 64bit calibre in a new PC. I am unable to open the program. I've tried uninstalling/reinstalling, uninstalling and trying to use a portable version, opening via administrator. I try to open the program and nothing happens. Nothing in task manager. I have reviewed earlier posts but didnt help. I am just a user but the cmd screen is rather short compared to other screenshots I have seen. Anybody can help? Attached Thumbnails

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01-30-2024, 12:58 PM	#2
kovidgoyal creator of calibre Posts: 44,526 Karma: 24495948 Join Date: Oct 2006 Location: Mumbai, India Device: Various	reboot in safe mode then try to run calibre, see if it starts.

01-30-2024, 02:38 PM	#3
urbasaurus Junior Member Posts: 5 Karma: 12 Join Date: May 2016 Location: Brussels Device: Meebook P78 pro	I restarted in safe mode but the PC remained with a black screen and not really starting. I had to turn off using the hard reset. I turned on the PC normally right away. I checked that there was no data loss or no other problem and tried to open Calibre. Now it works all the time (I have turned off and on a couple of times). Thanks so much!!!!!

01-31-2024, 01:08 PM	#4
Aliandry Junior Member Posts: 5 Karma: 10 Join Date: Oct 2022 Device: none	My Calibre won't open since I updated it yesterday as well. I tried to restart the pc in safe mode, could not open it then, cannot open it out of it either. I don't know what else to try. I've already "repaired" it.

01-31-2024, 03:11 PM	#6
urbasaurus Junior Member Posts: 5 Karma: 12 Join Date: May 2016 Location: Brussels Device: Meebook P78 pro	Unfortunately it doesnt work for me again. Now doesnt work even after the restart in safe mode.

02-03-2024, 04:22 AM	#8
urbasaurus Junior Member Posts: 5 Karma: 12 Join Date: May 2016 Location: Brussels Device: Meebook P78 pro	I have downloaded the drivers from AMD and it seems to work after the first restart. I cross fingers that it will continue working. Thanks so much!!!

06-20-2024, 09:32 AM	#9
KariK Member Posts: 18 Karma: 10 Join Date: Jul 2011 Device: iPad	Hi, I had the same issue after getting a Windows 11 system. My old one was Windows 10 and calibre ran fine there. Reinstalling calibre did not help. However, the comment about checking the taskbar made me check. Sure enough, there was a calibre icon there. Checked the Task Manager and the two calibre processes were there. Accessed the calibre server from my iPad and the server WAS running. So I right-clicked on the taskbar icon and chose Maximize. Whoa! Calibre came up in a full-screen mode and then worked normally from there on. So that was my fix, YMMV.