Posts tagged: There is no public key available for the following key IDs xubuntu

How to fix “There is no public key available for the following key IDs”

When I run the command

sudo apt-get update

I got this warning:

There is no public key available for the following key IDs: [key_id]

To fix:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys [key_id]

The command above downloads the missing key using the hexadecimal numbers given the [key_id] with apt-key. After running apt-key to download the missing [key_id], any packages from that repositories will be considered trusted.

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