On Wed, Jan 17, 2024 at 08:40:58PM -0500, Thomas George wrote: > deb http://ftp.security-debian.org/debian-security/ bookworm-security main > non-free non-free-firmware
Stop guessing, and *read* what you were told to use. https://lists.debian.org/debian-user/2024/01/msg00778.html Your source is incorrect. The security repo is at "http://security.debian.org/debian-security";. There are other lines that also work, but you can't just guess randomly until you stumble across one. Read a trusted source, and copy what they tell you to use. Don't put "ftp." in front of things that don't need it.