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

Ivan Kamnev

Updated January 25, 2021 17:47

Plesk Onyx for Linux kb: technical ABT: Group A

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

Log into the server via SSH.
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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