When installing Kepware software (such as KEPServerEX, ThingWorx Kepware Server, or specific Kepware drivers), users may encounter a critical halt in the installation process accompanied by the error message:
Modern software installers use digital signatures to prove they haven't been tampered with. Kepware uses certificates issued by authorities like DigiCert or Sectigo. Modern Windows rejects them
Myth 3: "Kepware is broken; I need an older version." Reality: Older versions (pre-6.0) used SHA-1 certificates, which are now deprecated. Modern Windows rejects them. Downgrading is a security risk and often fails worse. The installer simply couldn't find the required root
Still, nothing seemed to work. The installer simply couldn't find the required root certificates. John was about to give up when he stumbled upon a peculiar solution. nothing seemed to work.