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Jiew Meng
Asked: 2011-05-22 22:04:56 +0800 CST

Apt-get update error: http://extras.ubuntu.com Public key unavailable [duplicate]

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GPG error: http://extras.ubuntu.com natty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192

I think I selected to install things from extras.ubuntu.com when I used the expert mode installer, but I got the above error when doing apt-get update. How do I fix this?

apt

1 Answers

  1. Best Answer
    gpg --keyserver keyserver.ubuntu.com --recv 3E5C1192
gpg --export --armor 3E5C1192 | sudo apt-key add -
sudo apt-get update

    This could be a solution. From

    http://www.ubuntugeek.com/fix-for-gpg-error-httpextras-ubuntu-com-maverick-release.html

    You can also get all launchpad keys automatically using the below method

    sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install launchpad-getkeys
sudo launchpad-getkeys

    From

    Ubuntu Extras keyring error

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