Nextcloud client failed to start after Stable Update applied 7 August 2026.
nextcloud: error while loading shared libraries: libKF6DBusAddons.so.6: cannot open shared object file: No such file or directory
Based on the pkgfile command output below, the missing library is provided by the kdbusaddons package:
$ pkgfile libKF6DBusAddons.so
extra/kdbusaddons
Not having the kdbusaddons package installed on my system caused the issue which was resolved by installing the kdbusaddons package. Based on running pacman -Qi command against nextcloud-client, the nextcloud-client package does not appear to require the kdbusaddons package:
$ pacman -Qi nextcloud-client
Name : nextcloud-client
Version : 2:34.0.0-1
Description : Nextcloud desktop client
Architecture : x86_64
URL : https://nextcloud.com/
Licenses : GPL-2.0-or-later
Groups : None
Provides : nextcloud-client-cloudproviders
Depends On : hicolor-icon-theme karchive kdsingleapplication kguiaddons libcloudproviders libp11 openssl qt6-5compat qt6-base
qt6-declarative qt6-svg qt6-webengine qt6-websockets qtkeychain-qt6 sqlite xcb-util-cursor xdg-utils
Optional Deps : kio: integration with Dolphin
nemo-python: integration with Nemo
nautilus-python: integration with Nautilus
python-caja: integration with Caja
Required By : None
Optional For : None
Conflicts With : nextcloud-client-cloudproviders
Replaces : nextcloud-client-cloudproviders
Installed Size : 20.29 MiB
Packager : Christian Heusel <gromit@archlinux.org>
Build Date : Tue 28 Jul 2026 05:08:28 AM EDT
Install Date : Fri 07 Aug 2026 06:43:49 AM EDTtype or paste code here
It seems that the fix for this would be to have the nextcloud-client package require kdbusaddons.