MobileRead Forums
Register Guidelines E-Books Today's Posts Search

Go Back   MobileRead Forums > E-Book Software > Calibre
Reload this Page Unable to upgrade Calibre

Notices

Reply
 
Thread Tools Search this Thread
Old 08-04-2025, 06:25 PM   #1
NugentS
Member
NugentS began at the beginning.
 
Posts: 11
Karma: 10
Join Date: Jun 2011
Device: Kindle
Unable to upgrade Calibre
Hi,

Whenever I try to install Calibre I get the following attached:

It says error 2503 (The installer has encountered an unexpected error)

Calibre (the installed version works), but I cannot upgrade

Any thoughts?
Attached Thumbnails
Click image for larger version Name: Capture.JPG Views: 15 Size: 37.6 KB ID: 217288  
NugentS is offline   Reply With Quote
Old 08-04-2025, 06:31 PM   #2
PeterT
Grand Sorcerer
PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.PeterT ought to be getting tired of karma fortunes by now.
 
Posts: 13,545
Karma: 79436716
Join Date: Nov 2007
Location: Toronto
Device: Libra H2O, Libra Colour
What happens if you do an uninstall and then reinstall? Calibre settings will remain after an uninstall.
PeterT is offline   Reply With Quote
Old 08-04-2025, 07:50 PM   #3
NugentS
Member
NugentS began at the beginning.
 
Posts: 11
Karma: 10
Join Date: Jun 2011
Device: Kindle
I was hoping to avoid an uninstall as the current version works and I have a fair degree of customisation.

Really - the customeisation remains if I uninstall and re-install?
NugentS is offline   Reply With Quote
Old 08-04-2025, 08:23 PM   #4
DNSB
Bibliophagist
DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.DNSB ought to be getting tired of karma fortunes by now.
 
DNSB's Avatar
 
Posts: 46,522
Karma: 169115146
Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
The 2503 error during an install is most often triggered by rights issues on the Temp folder.
Last edited by DNSB; 08-04-2025 at 08:26 PM.
DNSB is offline   Reply With Quote
Old 08-04-2025, 09:11 PM   #5
theducks
Well trained by Cats
theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.
 
theducks's Avatar
 
Posts: 31,094
Karma: 60358908
Join Date: Aug 2009
Location: The Central Coast of California
Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A
Uninstall (the standard Windows one) does not remove any settings or Libraries
theducks is offline   Reply With Quote
Old Yesterday, 02:15 AM   #6
Jaws
JCL Punch-Card Collector
Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.Jaws is out to avenge the death of his or her father, Domingo Montoya.
 
Posts: 79
Karma: 34468
Join Date: Jun 2014
Location: Antarctica
Device: Aggressively Device Independent
Quote:
Originally Posted by DNSB View Post
The 2503 error during an install is most often triggered by rights issues on the Temp folder.
It can be. It's more often triggered by failed synchronization of MSI (the Microsoft Installer, a part of Windows — and the program that actually does upgrades for Calibre, Office, and many other Windows executables). Fortunately, resynching is relatively easy, but it does involve a reboot.

Close all programs (that means the browser, too, so you're going to want to copy the following down first!). Open a command line in administrator mode (Win-S, search for "command," select "run as administrator"). Then type the following two commands:
Code:
msiexec /unreg
msiexec /regserver
then reboot.

This fixes the problem about 90-95% of the time, even when it's a TEMP folder permissions issue. Until the next time it gets out of synch... which is virtually guaranteed when there's a feature update, like 25H2 in about three months...
Jaws is offline   Reply With Quote
Reply

« Previous Thread | Next Thread »

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Calibre Companion not Working - Upgrade Needed no Upgrade SASSBS Calibre Companion 11 01-20-2022 02:53 PM
Unable to upgrade Calibre Portable waldektroc Calibre 5 01-24-2021 03:39 PM
Unable to upgrade to 2.53 on Windows 10 spender11 Devices 4 03-15-2016 07:04 PM
Unable to access a few books after upgrade to 1.44 Inferno Library Management 13 07-18-2014 10:38 PM
Unable to upgrade Boox M92 bfo Onyx Boox 12 12-05-2012 07:05 AM


All times are GMT -4. The time now is 08:58 AM.

Contact Us - FAQ - Guidelines - Privacy - Top

MobileRead.com is a privately owned, operated and funded community.