W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://deb.playonlinux.com precise InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 73F0D6E88E3D6C3A
W: Failed to fetch http://deb.playonlinux.com/dists/precise/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 73F0D6E88E3D6C3A
W: Some index files failed to download. They have been ignored, or old ones used instead.
1 Answer
You should add "playonlinux" repository's public key:
wget -q "http://deb.playonlinux.com/public.gpg" -O- | sudo apt-key add -
after that run :
sudo apt update
from playonlinux download page.
apt
uses GPG to verify cryptographic signatures on packages that it downloads, to prevent tampering. The error sounds like you are missing key 73F0D6E88E3D6C3A from the keyring. I don't know how to manually update the keyring list though.