The error occurs because the system lacks the necessary root certificates to verify the digital signature of the Kepware installer. This is a security feature to prevent running malicious software.
This error halts the installation process immediately, leaving engineers and IT professionals confused. This article provides an exhaustive deep dive into why this error occurs and, more importantly, the exact step-by-step solutions to resolve it. Understanding the Issue The error occurs because the
Download and Install Kepware’s Certificate: Visit the Kepware website and navigate to their
As he ran the installer, a error message popped up: "The installer was unable to find required root certificates." John was puzzled. He had checked the software requirements and ensured that his computer met all the necessary specifications. He tried running the installer again, but the error persisted. Identify the Certificate: On a separate
.exe) and select Properties. Navigate to the Digital Signatures tab. Select the signature and click Details. Note the issuer (commonly DigiCert or Sectigo)..crt or .cer file to the offline machine via USB.Root certificate store to build a trust chain back to a root CA (e.g., DigiCert, GlobalSign, or Microsoft’s own root).CRYPT_E_NOT_FOUND. Kepware’s installer translates this into the user-friendly (or user-unfriendly) message regarding "required root certificates exclusive."Apply Windows Updates: The most direct fix is to connect the machine to the internet and run Windows Update to automatically refresh the local Trusted Root Certification Authorities store.
for the specific root certificates commonly required for these legacy Windows installations? Kepserverex Root Certificate - Google Groups