<![CDATA[[Solved]Can't update due to GPG Error]]>Have not been updating Opera for some time. Now trying to update system from Opera 65 to latest.
Using Mint 18.3

This is what shows when I try to refresh the updates:

An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://deb.opera.com/opera-stable stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DD3C368A8DE1B7A0Failed to fetch https://deb.opera.com/opera-stable/dists/stable/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DD3C368A8DE1B7A0Some index files failed to download. They have been ignored, or old ones used instead.

Does anyone have a fix for this?

]]>https://forums.opera.com/topic/51846/solved-can-t-update-due-to-gpg-errorRSS for NodeSat, 11 Jul 2026 03:43:07 GMTMon, 04 Oct 2021 15:45:16 GMT60<![CDATA[Reply to [Solved]Can't update due to GPG Error on Mon, 04 Oct 2021 19:34:41 GMT]]>Problem solved - latest version (79) now installed and working.

]]>https://forums.opera.com/post/263797https://forums.opera.com/post/263797Mon, 04 Oct 2021 19:34:41 GMT<![CDATA[Reply to [Solved]Can't update due to GPG Error on Mon, 04 Oct 2021 15:58:37 GMT]]>Just found answer here in a post from 2017:
https://forums.opera.com/topic/22315/ubuntu-apt-get-is-telling-me-public-key-not-available/2?_=1633362027021

]]>https://forums.opera.com/post/263767https://forums.opera.com/post/263767Mon, 04 Oct 2021 15:58:37 GMT