The Repository 'https //download.webmin.com/download/newkey/repository Stable Release' Is Not Signed Better Here

This error occurs because your system’s package manager ( apt ) cannot verify the authenticity of the Webmin repository. For security reasons, Linux distributions require a GPG (GNU Privacy Guard) key to "handshake" with a repository. If that key is missing, expired, or in the wrong format, the system blocks the connection to prevent you from downloading potentially malicious software.

Now that the "handshake" is established, refresh your package list: sudo apt update Use code with caution. The error should now be gone, and you can proceed with: sudo apt install webmin Use code with caution. "Target Packages is configured multiple times"

To resolve this, you need to download the Webmin PGP key and place it in the trusted trusted.gpg.d directory. Follow these steps in your terminal: 1. Download and convert the key This error occurs because your system’s package manager

Webmin occasionally updates their signing keys, and your local version may be outdated. The Fix: How to Manually Add the Webmin Key

Newer versions of Debian (12+) and Ubuntu (22.04+) have changed how they store keys (moving away from apt-key ), making old installation methods obsolete. Now that the "handshake" is established, refresh your

curl -fsSL https://webmin.com | sudo gpg --dearmor -o /usr/share/keyrings/webmin.gpg Use code with caution. 2. Update your Source List

deb [signed-by=/usr/share/keyrings/webmin.gpg] https://webmin.com stable release Use code with caution. Follow these steps in your terminal: 1

To fix this, check both locations and remove the duplicate entry, keeping only the one that includes the signed-by tag we added above.