Como corrigir erro apt: NO_PUBKEY C5E224500C1289C0

Problema:

Ao executar apt update, você vê a seguinte mensagem de erro:

apt_error_no_pubkey_teamviewer.txt

Err:2 https://linux.teamviewer.com/deb stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C5E224500C1289C0

Err:2 https://linux.teamviewer.com/deb stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C5E224500C1289C0

Solução

Este erro ocorre devido ao repositório teamviewer usar o método desatualizado (a partir de abril de 2022) apt-key de importação de chaves.

Você pode importar a chave usando os seguintes comandos:

apt_no_pubkey_fix.sh

wget -q https://download.teamviewer.com/download/linux/signature/TeamViewer2017.asc -O- | gpg --dearmor | sudo tee /usr/share/keyrings/teamviewer-archive-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/teamviewer-archive-keyring.gpg] https://linux.teamviewer.com/deb stable main" > /etc/apt/sources.list.d/teamviewer.list

wget -q https://download.teamviewer.com/download/linux/signature/TeamViewer2017.asc -O- | gpg --dearmor | sudo tee /usr/share/keyrings/teamviewer-archive-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/teamviewer-archive-keyring.gpg] https://linux.teamviewer.com/deb stable main" > /etc/apt/sources.list.d/teamviewer.list

e então executando

apt_update.sh

apt update

apt update

novamente.