Hi all, I've been trying to debug an issue with a personal certificate. At first I thought it was a Kmail/Kleopatra bug because after some updates of KDE Applications back in January I stopped being able to sign emails with it. But lately, after trying in KDE Neon and also in a fresh installation of archlinux in a VM, it seems to work there but not in my old installation. I have carefully checked old configurations (I don't have any .pacnew) and still not working. I have already wrote a detailed explanation in the forum so I will not copy paste here. Here is the link: https://bbs.archlinux.org/viewtopic.php?id=256654 Shortly, this is what I can do in both installations and the result is different although both are Archlinux and up-to-date. rm -r .gnupg gpgsm --import my_certificate.p12 * Open Kleopatra -> Asks to trust root certificate -> Say yes and verify fingerprint of Root CA *Trust level in Kleopatra says "full" in VM and "invalid" in my desktop. *Kmail can sign emails in VM and it fails with the following error in my desktop. "Sending message failed. Could not compose message: Address family not supported by protocol." Any ideas what other packages can interfere with my certificate? In the comments it was mentioned gnutl, p11-kit and ca-certificates* but I have same pacakges installed in both systems (except lib32-* packages in the VM). Thanks, Iyán