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While trying to receive keys in my Debian Stretch server, I get this error:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF Executing: /tmp/apt-key-gpghome.4B7hWtn7Rm/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF gpg: failed to start the dirmngr '/usr/bin/dirmngr': No such file or directory gpg: connecting dirmngr at '/tmp/apt-key-gpghome.4B7hWtn7Rm/S.dirmngr' failed: No such file or directory gpg: keyserver receive failed: No dirmngr
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3 Answers 3

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192

Installing the package dirmngr fixed the error.

user@debian-server:~$ sudo apt-get install dirmngr

Retrying :

user@debian-server:~$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF Executing: /tmp/apt-key-gpghome.haKuPppywi/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF gpg: key A6A19B38D3D831EF: public key "Xamarin Public Jenkins (auto-signing) <[email protected]>" imported gpg: Total number processed: 1 gpg: imported: 1
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  • 6
    Had same problem on Debian 9.4. Installing dirmngr fixed it. Commented Mar 14, 2018 at 23:11
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    I got the same error of the OP, but I already have latest gpg installed. Commented Aug 2, 2018 at 5:04
  • 1
    installing gpg fixed it for me on a Debian 9.3. dirmngr was already installed. Commented Aug 23, 2018 at 11:56
  • Same issue on Raspbian 9.8 stretch. Installing dirmngr resolved it. Thanks. Commented Mar 11, 2019 at 4:58
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    I found that it was because I'd never used gpg before. sudo apt-install gpg if it isn't installed already - then run sudo gpg -k to create the dirmgr directory and try again. Commented Jul 28, 2022 at 13:38
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I wasn't able to get dirmngr to work, but you can also just import the key directly using apt-key add. The GPG public key is often listed at the root of the repo like http://origin-download.mono-project.com/repo/

curl https://origin-download.mono-project.com/repo/xamarin.gpg | sudo apt-key add -
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  • 2
    You need to run dirmngr if it's not already running. Commented Oct 3, 2018 at 19:54
  • dirmngr was running, but still no joy... If the keyserver happens to be keyserver.ubuntu.com then you can access via a browser and search for the public key using the --recv-keys parameter, then simply use apt-key add as per this answer Commented Mar 18, 2019 at 12:22
  • Following this answer, I managed to download a .asc file from keyserver.ubuntu.com, then to import it with sudo gpg --no-default-keyring --keyring /etc/apt/keyrings/<YOUR-APP>.gpg --import armored-keys.asc Commented Jan 11, 2024 at 15:53
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As said, the dirmngr package should be installed, but it may happen that apt does not work and cannot install any package. Don't worry. Search dirmngr package on https://packages.debian.org selecting your distribution version, download it on the linux machine and install it using dpkg command, for example:

cd /tmp wget http://ftp.it.debian.org/debian/pool/main/g/gnupg2/dirmngr_2.1.18-8~deb9u4_amd64.deb sudo dpkg -i dirmngr_2.1.18-8~deb9u4_amd64.deb

Then you'll be able to run apt-key command to fetch the missing keys.

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  • This allowed me to rescue and update my very old Debian Stretch install, after manually finding all the dependencies to install manually. Commented Jul 29, 2024 at 7:06

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