Hello, On a remote server at OVH provider, I upgraded from Debian 8 to 9 and 9 to 10. I did'nt care if the problem appears after the last migration, because it's not my server, I just helped temporarily.
But now: # apt-get update Err:1 http://debian.mirrors.ovh.net/debian buster-updates InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 04EE7237B7D453EC NO_PUBKEY 648ACFD622F3D138 Err:2 http://debian.mirrors.ovh.net/debian buster-backports InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 04EE7237B7D453EC NO_PUBKEY 648ACFD622F3D138 Err:3 http://debian.mirrors.ovh.net/debian buster InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 04EE7237B7D453EC NO_PUBKEY 648ACFD622F3D138 NO_PUBKEY DCC9EFBF77E11517 Get:4 http://security.debian.org buster/updates InRelease [65.4 kB] Err:4 http://security.debian.org buster/updates InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AA8E81B4331F7F50 NO_PUBKEY 112695A0E562B32A Reading package lists... Done W: GPG error: http://debian.mirrors.ovh.net/debian buster-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 04EE7237B7D453EC NO_PUBKEY 648ACFD622F3D138 E: The repository 'http://debian.mirrors.ovh.net/debian buster-updates InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: GPG error: http://debian.mirrors.ovh.net/debian buster-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 04EE7237B7D453EC NO_PUBKEY 648ACFD622F3D138 E: The repository 'http://debian.mirrors.ovh.net/debian buster-backports InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: GPG error: http://debian.mirrors.ovh.net/debian buster InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 04EE7237B7D453EC NO_PUBKEY 648ACFD622F3D138 NO_PUBKEY DCC9EFBF77E11517 E: The repository 'http://debian.mirrors.ovh.net/debian buster InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: GPG error: http://security.debian.org buster/updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AA8E81B4331F7F50 NO_PUBKEY 112695A0E562B32A E: The repository 'http://security.debian.org buster/updates InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. I tried to change mirror. I tried to reinstall debian-archive-keyring but I get a HTTP 404. I downloaded from snapshot.debian.org debian-archive-keyring 2019.1+deb10u1 and installed with dpkg -i. But the same situation. I checked apt-key fingerprint, its seems OK. Thanks for your help. Sincerly, -- Raphaël www.leclavierquibave.fr
