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Unable to update Plesk: The following signatures couldn't be verified because the public key is not available

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Ivan Kamnev
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Plesk Onyx for Linux kb: technical

Applicable to:

  • Plesk Onyx for Linux

Symptoms

Unable to update Plesk, the process fails with the following error:

CONFIG_TEXT: GPG error: http://autoinstall.plesk.com jessie InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BD11A6AA914BDF7E

Cause

Plesk GPG key is not installed.

Resolution

  1. Log into the server via SSH.
  2. Fetch and install GPG key by executing the commands below one by one:

    # wget http://autoinstall.plesk.com/plesk.gpg

    # apt-key add plesk.gpg

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