Yubikey no such device error fix

If you receive the “no such device” error when running gpg --card-status, you can use the sections below to troubleshoot.

Basic Troubleshooting
Using YubiKey Manager, ensure that the CCID USB interface is enabled and the OpenPGP application is enabled over USB.

Remove and reinsert the YubiKey. Sometimes, the GPG agent does not correctly detect if the YubiKey is plugged in.

Force GPG agent to restart by running the following command in Command Prompt (Windows) or Terminal (macOS / Linux): gpgconf --kill gpg-agent

GPG Options
If GPG is still not detecting the YubiKey, you may need to change some of GPG’s options. Using a text editor, add the line “reader-port Yubico Yubikey” for YubiKey NEO and YubiKey 4, "reader-port Yubico Yubi" for YubiKey 5 (without quotes) to your scdaemon.conf file. If the file does not exist, create it.

On Windows, this is saved at: %APPDATA%\gnupg\scdaemon.conf

On macOS and Linux, this is saved at: ~/.gnupg/scdaemon.conf

Once you have added these options, restart the GPG agent by running the command below in Command Prompt (Windows) or Terminal (macOS / Linux).

gpgconf --kill gpg-agent



Additional Troubleshooting
If you are running a distribution of Linux that uses systemd, you may need to start and enable the pcsc daemon, which can be done by running the following commands.

#systemctl start pcscd
#systemctl enable pcscd