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Tag: fix GPG error NO_PUBKEY

  • How to fix GPG error NO_PUBKEY in Ubuntu

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    by

    ddos
    in

    Sometimes, you can get an error like below when you use apt-get update command: W: GPG error: http://archive.canonical.com trusty Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32 W: GPG error: http://security.ubuntu.com trusty-security Release: The following signatures couldn’t be verified because the public key is not…