E The Repository 'https //download.webmin.com/download/repository Sarge Release' Is Not Signed ((exclusive)) May 2026

Which are you using? (e.g., Ubuntu 22.04, Debian 11, CentOS?)

(If that file is empty, check /etc/apt/sources.list instead) . Which are you using

Do you have a (like UFW) that might be blocking the key download? Which are you using? (e.g.

An attacker could swap the real Webmin package with a malicious one. CentOS?) (If that file is empty

You may have added the Webmin repository URL but forgot to import the digital signature.

Modern Linux distributions have tightened security regarding how repositories are added.

If you are still seeing "not signed" errors, it usually means there is a duplicate entry in your /etc/apt/sources.list file. Search that file and remove any old lines pointing to Webmin to ensure only the new, signed entry remains.