Kepware The Installer Was Unable To Find Required Root Certificates Exclusive [2021] Jun 2026

Block the installer from reaching certificate validation endpoints:

Modern Kepware installers (v5.20 to v7.x) are digitally signed. During installation, Windows tries to verify this signature against a list of trusted Certificate Authorities (CAs), such as GlobalSign or VeriSign. If your OS cannot find these certificates—often because it hasn't received a Windows Update in a long time—the installer fails to protect you from potentially untrusted software. Step-by-Step Solutions Method 1: The Quick Fix (Run Windows Update) The simplest solution is to let Windows update itself. Go to . Click Check for updates . Step-by-Step Solutions Method 1: The Quick Fix (Run

This bypasses signature validation. Only use this in a trusted, isolated network where you are certain the installer binary has not been tampered with. This is not recommended for production SCADA environments but can resolve the "exclusive" lock error in lab/test settings. This bypasses signature validation

The error "kepware the installer was unable to find required root certificates exclusive" is not a bug in Kepware itself. It is a symptom of an outdated or misconfigured Windows certificate store. In an era of increasing cybersecurity standards (IEC 62443, NIST SP 800-53), root certificate validation is a mandatory security control. This error is a

This error is a , not a bug. It ensures that Kepware components are properly signed and untampered. Attempting to bypass the check without updating the root store is strongly discouraged in production or regulated environments (NERC CIP, IEC 62443, FDA, etc.).

Official documentation from PTC Support confirms that this is a known issue for version 6.x and higher when digital signatures cannot be verified.