I've tried installing the latest QGIS relaease on my Ubuntu according to the installation guide on the website (which has worked before).

wget -qO - https://qgis.org/downloads/qgis-2021.gpg.key | sudo gpg --no-default-keyring --keyring gnupg-ring:/etc/apt/trusted.gpg.d/qgis-archive.gpg --import

sudo chmod a+r /etc/apt/trusted.gpg.d/qgis-archive.gpg

I got this error code:

gpg: key 46B5721DBBD2996A: 1 signature not checked due to a missing key
gpg: key 46B5721DBBD2996A: "QGIS Archive Automatic Signing Key (2021) <qgis-developer@lists.osgeo.org>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

When trying to install now, using:

sudo add-apt-repository "deb https://qgis.org/ubuntu $(lsb_release -c -s) main"

I get:

N: Skipping acquisition of configured file 'main/binary-i386/Packages', as repository 'https://qgis.org/ubuntu focal InRelease' doesn't support architecture 'i386'
N: Skipping acquisition of configured file 'universe/binary-i386/Packages', as repository 'http://miktex.org/download/ubuntu bionic InRelease' doesn't support architecture 'i386'
W: GPG error: http://packages.cloud.google.com/apt cloud-sdk InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FEEA9169307EA071 NO_PUBKEY 8B57C5C2836F4BEB
E: The repository 'http://packages.cloud.google.com/apt cloud-sdk InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Doesn anyone have an idea what I could do? I tried deleting the old keys in sources.list, but it isn't working...

2 Answers 2


From what I can see it has nothing to do with QGIS but that Google repo for cloud-sdk. Remove or fix that and you should be good to go.


From Error adding qgis.org repository public key to apt keyring :

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-key 46B5721DBBD2996A

The key for the Google cloud-sdk is a different key, but the same error.

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