According to the release notes (https://www.thunderbird.net/en- US/thunderbird/78.8.1/releasenotes/), the 78.8.1 update has several GPG- related bug fixes, I wonder if those would help.
I am currently working on the update for all supported Ubuntu releases. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1916881 Title: Thunderbird unable to access external pgp keys To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1916881/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs