The new update of Manjaro fails: key

you have a radeon video card not nvidia card
can you return

sudo mhwd -li 

This leads me to believe you’re using a graphical updater (Pamac?).
Try updating from a terminal to see more/better error messages and let’s exclude the AUR for this Manjaro update:

$ sudo pacman -Syu

Thanks stephane and freggel.doe!

I tried your proposals but

the command
sudo mhwd -li

resulted in

Warning: No installed USB configs!

and

sudo pacman -Syu

found errors concerning keys, telling me that Transmission failed

:: Vill du fortsätta till installationen? [J/n] J

(27/27) Kontrollerar nycklarna i nyckelringen [######################] 100%

Hämtar nycklarna som behövs...

:: Importera PGP-nyckel 428F7ECC7117F726, "Helmut Stult <helmut@manjaro.org>"? [J/n] J

FEL: key "428F7ECC7117F726" could not be looked up remotely

:: Importera PGP-nyckel CAA6A59611C7F07E, "Philip Mueller <philm@manjaro.org>"? [J/n] J

FEL: key "CAA6A59611C7F07E" could not be looked up remotely

FEL: nödvändig nyckel saknas från nyckelring

FEL: Kunde inte påbörja transaktionen (oväntat fel)

Fel uppstod, inga paket uppgraderades.

[lars@lars-pc ~]$

So there is obviously some problem with my keyrings or keys.

then try first

sudo pacman-mirrors --continent
sudo pacman -Syy
sudo pacman -S archlinux-keyring manjaro-keyring
sudo pacman-key --init
sudo pacman-key --populate archlinux manjaro
sudo pacman-key --refresh-keys
[lars@lars-pc ~]$ sudo pacman-mirrors --continent

[sudo] lösenord för lars:

::INFO Downloading mirrors from repo.manjaro.org

::INFO User generated mirror list

::------------------------------------------------------------

::INFO Custom mirror file saved: /var/lib/pacman-mirrors/custom-mirrors.json

::INFO Using default mirror file

::INFO Querying mirrors - This may take some time

At the end:
::INFO Mirror list generated and saved to: /etc/pacman.d/mirrorlist

Next command:
[lars@lars-pc ~]$ sudo pacman -Syy
:: Synkroniserar katalogdatabaserna…
core 169,1 KiB 16,5 MiB/s 00:00 [######################] 100%
extra 2006,2 KiB 4,35 MiB/s 00:00 [######################] 100%
community 6,1 MiB 9,99 MiB/s 00:01 [######################] 100%
multilib 196,3 KiB 9,59 MiB/s 00:00 [######################] 100%

This command failed
[lars@lars-pc ~]$ sudo pacman -S archlinux-keyring manjaro-keyring
VARNING: archlinux-keyring-20200622-1 är senaste versionen – återinstallerar
VARNING: manjaro-keyring-20200603-1 är senaste versionen – återinstallerar
Reder ut beroenden…
Letar efter krockar mellan paket…

Paket (2) archlinux-keyring-20200622-1  manjaro-keyring-20200603-1

Storlek efter installation:  1,40 MiB
Nettouppgraderingsstorlek:   0,00 MiB

:: Vill du fortsätta till installationen? [J/n] J
(2/2) Kontrollerar nycklarna i nyckelringen        [######################] 100%
Hämtar nycklarna som behövs...
:: Importera PGP-nyckel 6D42BDD116E0068F, "Christian Hesse <arch@eworm.de>"? [J/n] J
:: Importera PGP-nyckel CAA6A59611C7F07E, "Philip Mueller <philm@manjaro.org>"? [J/n] J
FEL: key "CAA6A59611C7F07E" could not be looked up remotely
FEL: nödvändig nyckel saknas från nyckelring
FEL: Kunde inte påbörja transaktionen (oväntat fel)
Fel uppstod, inga paket uppgraderades.

The last rows says that the key “CAA6A59611C7F07E” is missing from the keyring and that the transaction couldn’t be initiated, no parcel upgraded.
So unfortunately, it stopped there. I had identical problem in Aug 19, solved in my topic “Dropbox and key problems”.

see this , change keyserver

Thanks for now, stephane, I will study the post and come back later.

[lars@lars-pc ~]$ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys CAA6A59611C7F07E
gpg: nyckel CAA6A59611C7F07E: publika nyckeln "Philip Müller (Called Little) <philm@manjaro.org>" importerades
gpg: Totalt antal behandlade enheter: 1
gpg:                     importerade: 1

Hi, the missing key (CAA6A59611C7F07E) could be downloaded from the ubuntu keyserver, but the next command ended up in failure as before
sudo pacman -S archlinux-keyring manjaro-keyring

FEL: key "CAA6A59611C7F07E" could not be looked up remotely
FEL: nödvändig nyckel saknas från nyckelring
FEL: Kunde inte påbörja transaktionen (oväntat fel)
Fel uppstod, inga paket uppgraderades.
[lars@lars-pc ~]$

Believing that Google Chrome or Dropbox might be involved in the update problem I uninstalled both of them, using Pamac.

A new attempt to update resulted in:

Summery of transmission
Total size 107,4 kB

To install: mhwd-nvidia-450xx 450,66-1 Oficial repository 15,7 kB
                Libxcrypt                  4.4.16-3  Official repository 91,7 kB 

The update then stopped with ”Transmission failed”.

:point_up_2: :wink:
I think that error message can be ignored? As @stephane said, you don’t have that card.

can you return

sudo mhwd -li

Hi BG405 and stephane,
Sending the sudo mhwd -li command:
[lars@lars-pc ~]$ sudo mhwd -li
[sudo] lösenord för lars:
> Installed PCI configs:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-linux 2018.05.04 true PCI

Warning: No installed USB configs!
[lars@lars-pc ~]$ 

Concerning the video card - I dont know how to remove it !?

why do you want to remove it ?

you have

Graphics:
Device-1: AMD Kabini [Radeon HD 8240 / R3 Series] vendor: Lenovo
driver: radeon v: kernel bus ID: 00:01.0 chip ID: 1002:9838
Display: x11 server: [X.Org](http://X.Org) 1.20.8 driver: ati,radeon unloaded: modesetting
alternate: fbdev,vesa display ID: :0.0 screens: 1
Screen-1: 0 s-res: 1280x1024 s-dpi: 96 s-size: 338x270mm (13.3x10.6")
s-diag: 433mm (17")
Monitor-1: VGA-0 res: 1280x1024 hz: 60 dpi: 96 size: 337x270mm (13.3x10.6")
diag: 432mm (17")
OpenGL: renderer: AMD KABINI (DRM 2.50.0 4.19.138-1-MANJARO LLVM 10.0.1)
v: 4.5 Mesa 20.1.5 direct render: Yes

1 - is keyring solved ?
2 - if so then

sudo pacman -Syyu

waiting point 1 & 2 ok
if not provide all message error

Sorry about my comment on video card - a brain-loss - let us forget it, please!

The keyrings are not functioning. This is the result of sudo pacman -Syyu

lib32-pango-1:1....   193,2 KiB  6,29 MiB/s 00:00 [######################] 100%
 lib32-systemd-24...   527,1 KiB  8,58 MiB/s 00:00 [######################] 100%
 lib32-p11-kit-0....   396,5 KiB  5,53 MiB/s 00:00 [######################] 100%
 lib32-libva-mesa...     2,6 MiB  9,13 MiB/s 00:00 [######################] 100%
 lib32-mesa-vdpau...     2,8 MiB  8,44 MiB/s 00:00 [######################] 100%
 lib32-nspr-4.28-...   119,4 KiB  5,83 MiB/s 00:00 [######################] 100%
 lib32-nss-3.56-1...  1146,4 KiB  9,33 MiB/s 00:00 [######################] 100%
 lib32-vulkan-int...  2027,0 KiB  4,40 MiB/s 00:00 [######################] 100%
 lib32-vulkan-rad...  1580,7 KiB  9,08 MiB/s 00:00 [######################] 100%
(109/109) Controlling keys in keyring    [######################] 100%
Fetching keys...
:: Import PGP-key 428F7ECC7117F726, "Helmut Stult <helmut@manjaro.org>"? [J/n] J
Error: key "428F7ECC7117F726" could not be looked up remotely
:: Import PGP-key CAA6A59611C7F07E, "Philip Mueller <philm@manjaro.org>"? [J/n] J
FEL: key "CAA6A59611C7F07E" could not be looked up remotely
:: Importera PGP-nyckel BBE43771487328A9, "Bartłomiej Piotrowski <bpiotrowski@archlinux.org>"? [J/n] J
:: Importera PGP-nyckel EEEEE2EEEE2EEEEE, "Gaetan Bisson <bisson@archlinux.org>"? [J/n] J
:: Importera PGP-nyckel 94657AB20F2A092B, "Andreas Radke <andyrtr@archlinux.org>"? [J/n] J
:: Importera PGP-nyckel 06096A6AD1CEDDAC, "Laurent Carlier <lordheavym@gmail.com>"? [J/n] J
FEL: key "06096A6AD1CEDDAC" could not be looked up remotely
:: Importera PGP-nyckel 81A402D4F382BBBD, "Brad Fanella <cesura@archlinux.org>"? [J/n] J
:: Importera PGP-nyckel B02854ED753E0F1F, "Anatol Pomozov <anatol.pomozov@gmail.com>"? [J/n] 
FEL: key "B02854ED753E0F1F" could not be looked up remotely
:: Importera PGP-nyckel 9D893EC4DAAF9129, "Bruno Pagani <archange@archlinux.org>"? [J/n] J
FEL: key "9D893EC4DAAF9129" could not be looked up remotely
:: Importera PGP-nyckel C06086337C50773E, "Jelle van der Waa <jelle@vdwaa.nl>"? [J/n] J
FEL: key "C06086337C50773E" could not be looked up remotely
:: Importera PGP-nyckel CEB167EFB5722BD6, "Eli Schwartz <eschwartz@archlinux.org>"? [J/n] J
:: Importera PGP-nyckel E742683BA08CB2FF, "Morten Linderud <foxboron@archlinux.org>"? [J/n] J
Error: Neccessary key missing in keyring
Error: Transaction could not be started (unexpected error)
Error, no parcel were updated 
[lars@lars-pc ~]$ 

So the keyring is not solved. And I am getting more confused the more I try to understand them.

so change mirrors

sudo pacman-mirrors --continent
sudo pacman -Syy

Thank you, stephane!

[lars@lars-pc ~]$ sudo pacman-mirrors --continent
[sudo] lösenord för lars: 
::INFO Downloading mirrors from repo.manjaro.org
::INFO User generated mirror list
::------------------------------------------------------------
::INFO Custom mirror file saved: /var/lib/pacman-mirrors/custom-mirrors.json
::INFO Using default mirror file
::INFO Querying mirrors - This may take some time
  0.732 Austria        : http://mirror.inode.at/manjaro/
  0.259 Austria        : http://mirror.easyname.at/manjaro/
  0.609 Austria        : ftp://mirror.easyname.at/manjaro/
  0.322 Belarus        : http://mirror.datacenter.by/pub/mirrors/manjaro/
  0.236 Belgium        : https://mirror.futureweb.be/manjaro/
  0.163 Belgium        : http://mirror.futureweb.be/manjaro/
  1.177 Bulgaria       : http://manjaro.telecoms.bg/
  0.295 Czech          : https://mirror.dkm.cz/manjaro/
  0.188 Denmark        : https://mirrors.dotsrc.org/manjaro/
  0.280 Denmark        : https://www.uex.dk/public/manjaro/
  0.388 France         : https://mirror.oldsql.cc/manjaro/
  0.286 France         : https://manjaro.mcofficer.me/
  0.273 France         : https://manjaro.ynh.ovh/
  0.366 France         : http://ftp.free.org/mirrors/repo.manjaro.org/repos/
  0.438 France         : ftp://ftp.free.org/mirrors/repo.manjaro.org/repos/
  0.254 France         : http://kibo.remi.lu/
  0.274 Germany        : https://mirror.alpix.eu/manjaro/
  0.219 Germany        : https://mirror.23media.com/manjaro/
  0.144 Germany        : http://mirror.23media.com/manjaro/
  1.069 Germany        : https://ftp.halifax.rwth-aachen.de/manjaro/
  0.530 Germany        : ftp://ftp.halifax.rwth-aachen.de/manjaro/
  0.389 Germany        : http://ftp.tu-chemnitz.de/pub/linux/manjaro/
  0.491 Germany        : ftp://ftp.tu-chemnitz.de/pub/linux/manjaro/
  0.212 Germany        : https://mirror.netzspielplatz.de/manjaro/packages/
  0.226 Germany        : https://mirror.netcologne.de/manjaro/
  0.234 Germany        : https://manjaro.moson.eu/
  0.180 Germany        : http://manjaro.moson.eu/
  0.241 Germany        : https://manjaro.moson.org/
  0.190 Germany        : http://manjaro.moson.org/
  1.894 Greece         : https://ftp.cc.uoc.gr/mirrors/linux/manjaro/
  1.438 Greece         : http://ftp.cc.uoc.gr/mirrors/linux/manjaro/
  1.165 Greece         : ftp://ftp.cc.uoc.gr/mirrors/linux/manjaro/
  0.422 Hungary        : https://quantum-mirror.hu/mirrors/pub/manjaro/
  0.325 Hungary        : http://quantum-mirror.hu/mirrors/pub/manjaro/
  0.522 Iceland        : https://mirrors.opensource.is/manjaro/
  0.396 Iceland        : http://mirrors.opensource.is/manjaro/
  ..... Iceland        : ftp://mirrors.opensource.is/manjaro/

::ERROR ftp error: error_perm('550 Failed to change directory.') 'ftp://mirrors.opensource.is/manjaro/'

  0.493 Italy          : https://manjaro.mirror.garr.it/manjaro/
  0.792 Italy          : https://ba.mirror.garr.it/mirrors/manjaro/
  0.672 Italy          : https://ct.mirror.garr.it/mirrors/manjaro/
  0.321 Netherlands    : https://manjaro.mirrors.lavatech.top/
  0.258 Netherlands    : http://manjaro.mirrors.lavatech.top/
  0.356 Netherlands    : https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/
  0.491 Netherlands    : ftp://ftp.nluug.nl/pub/os/Linux/distr/manjaro/
  0.313 Netherlands    : http://ftp.snt.utwente.nl/pub/linux/manjaro/
  0.520 Netherlands    : ftp://ftp.snt.utwente.nl/pub/linux/manjaro/
  0.209 Netherlands    : https://mirror.koddos.net/manjaro/
  0.147 Norway         : http://mirror.terrahost.no/linux/manjaro/
  0.405 Poland         : https://mirror.tuchola-dc.pl/manjaro/
  0.354 Poland         : http://ftp.vectranet.pl/manjaro/
  0.528 Poland         : ftp://ftp.vectranet.pl/manjaro/
  0.140 Russia         : https://mirror.yandex.ru/mirrors/manjaro/
  0.696 Russia         : https://mirror.truenetwork.ru/manjaro/
  0.560 Russia         : http://mirror.truenetwork.ru/manjaro/
  0.132 Sweden         : https://ftp.lysator.liu.se/pub/manjaro/
  0.175 Sweden         : ftp://ftp.lysator.liu.se/pub/manjaro/
  0.066 Sweden         : https://mirror.zetup.net/manjaro/
  0.292 Switzerland    : https://manjaro.osmir.ch/
  0.188 Switzerland    : http://manjaro.osmir.ch/
  0.258 United_Kingdom : https://www.mirrorservice.org/sites/repo.manjaro.org/re
  0.199 United_Kingdom : http://manjaro.mirrors.uk2.net/
  0.192 United_Kingdom : https://uk.mirrors.fossho.st/manjaro/
  0.178 United_Kingdom : http://uk.mirrors.fossho.st/manjaro/
::INFO Writing mirror list
::Sweden          : https://mirror.zetup.net/manjaro/stable
::Russia          : https://mirror.yandex.ru/mirrors/manjaro/stable
::Germany         : https://mirror.23media.com/manjaro/stable
::Norway          : http://mirror.terrahost.no/linux/manjaro/stable
::Belgium         : https://mirror.futureweb.be/manjaro/stable
::Sweden          : https://ftp.lysator.liu.se/pub/manjaro/stable
::United_Kingdom  : https://uk.mirrors.fossho.st/manjaro/stable
::Germany         : https://manjaro.moson.eu/stable
::Denmark         : https://mirrors.dotsrc.org/manjaro/stable
::Switzerland     : https://manjaro.osmir.ch/stable
::Germany         : https://manjaro.moson.org/stable
::United_Kingdom  : http://manjaro.mirrors.uk2.net/stable
::Netherlands     : https://mirror.koddos.net/manjaro/stable
::Germany         : https://mirror.netzspielplatz.de/manjaro/packages/stable
::Germany         : https://mirror.netcologne.de/manjaro/stable
::France          : http://kibo.remi.lu/stable
::Netherlands     : https://manjaro.mirrors.lavatech.top/stable
::United_Kingdom  : https://www.mirrorservice.org/sites/repo.manjaro.org/repos/sta
::France          : https://manjaro.ynh.ovh/stable
::Germany         : https://mirror.alpix.eu/manjaro/stable
::Denmark         : https://www.uex.dk/public/manjaro/stable
::France          : https://manjaro.mcofficer.me/stable
::Czech           : https://mirror.dkm.cz/manjaro/stable
::Belarus         : http://mirror.datacenter.by/pub/mirrors/manjaro/stable
::Hungary         : https://quantum-mirror.hu/mirrors/pub/manjaro/stable
::France          : https://mirror.oldsql.cc/manjaro/stable
::Poland          : https://mirror.tuchola-dc.pl/manjaro/stable
::France          : http://ftp.free.org/mirrors/repo.manjaro.org/repos/stable
::Germany         : http://ftp.tu-chemnitz.de/pub/linux/manjaro/stable
::Netherlands     : https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/stable
::Italy           : https://manjaro.mirror.garr.it/manjaro/stable
::Netherlands     : http://ftp.snt.utwente.nl/pub/linux/manjaro/stable
::Poland          : http://ftp.vectranet.pl/manjaro/stable
::Germany         : https://ftp.halifax.rwth-aachen.de/manjaro/stable
::Russia          : https://mirror.truenetwork.ru/manjaro/stable
::Austria         : http://mirror.easyname.at/manjaro/stable
::Italy           : https://ct.mirror.garr.it/mirrors/manjaro/stable
::Austria         : http://mirror.inode.at/manjaro/stable
::Italy           : https://ba.mirror.garr.it/mirrors/manjaro/stable
::Greece          : https://ftp.cc.uoc.gr/mirrors/linux/manjaro/stable
::Bulgaria        : http://manjaro.telecoms.bg/stable
::INFO Mirror list generated and saved to: /etc/pacman.d/mirrorlist
[lars@lars-pc ~]$ sudo pacman -Syy
:: Synkroniserar katalogdatabaserna...
 core                  168,7 KiB  8,24 MiB/s 00:00 [######################] 100%
 extra                2013,9 KiB  11,6 MiB/s 00:00 [######################] 100%
 community               6,1 MiB  10,5 MiB/s 00:01 [######################] 100%
 multilib              194,9 KiB  9,51 MiB/s 00:00 [######################] 100%
[lars@lars-pc ~]$

then

sudo pacman -Syyu

do not reboot immediatly , we have a checking to do before

The result of sudo pacman -Syyu follows. Error occured when trying to import
PGP-key CAA6A59611C7F07E, “Philip Mueller philm@manjaro.org”? [J/n] J
FEL: key “CAA6A59611C7F07E” could not be looked up remotely.
Further down on fetching keys from the keyring several keys fails to be imported.

[lars@lars-pc ~]$ sudo pacman -Syyu

[sudo] lösenord för lars:
:: Synkroniserar katalogdatabaserna…
core 168,7 KiB 8,24 MiB/s 00:00 [######################] 100%
extra 2013,9 KiB 10,9 MiB/s 00:00 [######################] 100%
community 6,1 MiB 10,4 MiB/s 00:01 [######################] 100%
multilib 194,9 KiB 6,34 MiB/s 00:00 [######################] 100%
:: Some packages should be upgraded first…
Reder ut beroenden…
Letar efter krockar mellan paket…

Paket (2) archlinux-keyring-20200820-1 manjaro-system-20200906-1

Storlek efter installation: 1,29 MiB
Nettouppgraderingsstorlek: 0,05 MiB

:: Vill du fortsätta till installationen? [J/n] J
(2/2) Kontrollerar nycklarna i nyckelringen [######################] 100%
Hämtar nycklarna som behövs…
:: Importera PGP-nyckel CAA6A59611C7F07E, “Philip Mueller philm@manjaro.org”? [J/n] J
FEL: key “CAA6A59611C7F07E” could not be looked up remotely
FEL: nödvändig nyckel saknas från nyckelring
FEL: Kunde inte påbörja transaktionen (oväntat fel)
Fel uppstod, inga paket uppgraderades.

:: Påbörjar fullständig uppgradering…
Reder ut beroenden…
Letar efter krockar mellan paket…

Paket (109) amd-ucode-20200817.r1695.7a30af1-1
archlinux-appstream-data-20200720-1.1 binutils-2.35-1
ca-certificates-mozilla-3.56-1 cups-2.3.3-3 curl-7.72.0-2
dnsmasq-2.82-2 engrampa-1.24.1-1 foomatic-db-3:20200822-1
fuse-common-3.9.3-1 fuse3-3.9.3-1 gcc-10.2.0-1 gcc-libs-10.2.0-1
glib2-2.64.5-1 glib2-docs-2.64.5-1 glibc-2.32-2 harfbuzz-2.7.1-1
harfbuzz-icu-2.7.1-1 hplip-1:3.20.6-3 hwids-20200813.1-1
iana-etc-20200812-1 intel-gmmlib-20.2.4-1 iputils-20190709-3
kbd-2.3.0-2 ldb-1:2.1.4-1 lib32-gcc-libs-10.2.0-1
lib32-glib2-2.64.5-1 lib32-glibc-2.32-2 lib32-gtk3-3.24.22-1
lib32-harfbuzz-2.7.1-1 lib32-libva-mesa-driver-20.1.6-1
lib32-libx11-1.6.11-1 lib32-mesa-20.1.6-1
lib32-mesa-vdpau-20.1.6-1 lib32-nspr-4.28-1 lib32-nss-3.56-1
lib32-p11-kit-0.23.21-1 lib32-pango-1:1.46.1-1
lib32-systemd-246.2-1 lib32-vulkan-intel-20.1.6-1
lib32-vulkan-radeon-20.1.6-1 libcap-2.42-1 libcups-2.3.3-3
libinput-1.16.1-1 libmm-glib-1.14.2-1 libnm-1.26.2-1
libnsl-1.3.0-1 libp11-kit-0.23.21-1 libpipeline-1.5.3-1
libpurple-2.14.1-3 libreoffice-still-6.4.6-1
libtool-2.4.6+42+gb88cebd5-14 libutil-linux-2.36-2
libva-mesa-driver-20.1.6-1 libxcrypt-4.4.16-3 lightdm-1:1.30.0-4
linux-api-headers-5.7-1 linux-firmware-20200817.r1695.7a30af1-1
linux419-4.19.141-2 lmdb-0.9.26-1 man-pages-5.08-1 mesa-20.1.6-1
mesa-vdpau-20.1.6-1 mhwd-0.6.4-3 mhwd-db-0.6.4-12
mhwd-nvidia-450xx-450.66-1 modemmanager-1.14.2-1 mpfr-4.1.0-1
mpg123-1.26.3-2 nano-5.1-1 networkmanager-1.26.2-1 nspr-4.28-1
nss-3.56-1 openexr-2.5.3-1 openresolv-3.11.0-1 p11-kit-0.23.21-1
pam-1.4.0-3 pamac-cli-9.5.8-1 pamac-common-9.5.8-1
pamac-gtk-9.5.8-1 pambase-20200721.1-2 pango-1:1.46.1-1
perl-libwww-6.47-1 pidgin-2.14.1-3 pipewire-0.3.8-2
python-bcrypt-3.2.0-1 python-cffi-1.14.2-1 python-pytz-2020.1-2
python-reportlab-3.5.48-1 python-setuptools-1:49.6.0-1
python2-bcrypt-3.1.7-4 python2-cffi-1.14.2-1 sqlite-3.33.0-1
syncthing-1.8.0-1 systemd-246.3-2 systemd-libs-246.3-2
systemd-sysvcompat-246.3-2 thin-provisioning-tools-0.9.0-1
ttf-droid-20121017-8 udisks2-2.9.1-1 util-linux-2.36-2
vlc-3.0.11.1-2 vulkan-intel-20.1.6-1 vulkan-radeon-20.1.6-1
xfce4-weather-plugin-0.10.1-2 xfsprogs-5.7.0-3 xfwm4-4.14.5-1
archlinux-keyring-20200820-1 manjaro-system-20200906-1

Storlek efter installation: 2304,61 MiB
Nettouppgraderingsstorlek: -9,48 MiB

:: Vill du fortsätta till installationen? [J/n] J
(109/109) Kontrollerar nycklarna i nyckelringen [######################] 100%
Hämtar nycklarna som behövs…
:: Importera PGP-nyckel 428F7ECC7117F726, “Helmut Stult helmut@manjaro.org”? [J/n] J
FEL: key “428F7ECC7117F726” could not be looked up remotely
:: Importera PGP-nyckel CAA6A59611C7F07E, “Philip Mueller philm@manjaro.org”? [J/n] J
FEL: key “CAA6A59611C7F07E” could not be looked up remotely
:: Importera PGP-nyckel 06096A6AD1CEDDAC, “Laurent Carlier lordheavym@gmail.com”? [J/n] J
FEL: key “06096A6AD1CEDDAC” could not be looked up remotely
:: Importera PGP-nyckel B02854ED753E0F1F, “Anatol Pomozov anatol.pomozov@gmail.com”? [J/n] J
FEL: key “B02854ED753E0F1F” could not be looked up remotely
:: Importera PGP-nyckel 9D893EC4DAAF9129, “Bruno Pagani archange@archlinux.org”? [J/n] J
FEL: key “9D893EC4DAAF9129” could not be looked up remotely
:: Importera PGP-nyckel C06086337C50773E, “Jelle van der Waa jelle@vdwaa.nl”? [J/n] J
FEL: key “C06086337C50773E” could not be looked up remotely
FEL: nödvändig nyckel saknas från nyckelring
FEL: Kunde inte påbörja transaktionen (oväntat fel)
Fel uppstod, inga paket uppgraderades.
[lars@lars-pc ~]$

try this for each line

gpg --recv-key 428F7ECC7117F726

If validation still fails then the file is either invalid or the keyserver cannot locate the key.

With the recent issues with the default keyserver, some keys cannot be found and you may have to try other servers. A few examples are:

To try a different server, you’ll use the --keyserver flag. Example:

gpg --keyserver pool.sks-keyservers.net --recv-key 428F7ECC7117F726

Awfully sorry, but I don’t understand where these commands should be put. After each Error-line with keys in terminal, like" key “C06086337C50773E” could not be looked up remotely"?