Kepware The Installer Was Unable To Find Required Root Certificates Exclusive Upd May 2026

Kepware: "The installer was unable to find required root certificates (exclusive)" — Diagnosis and Fixes

Summary

• Navigate to Settings > Update & Security > Windows Update.
• Click "Check for updates."
• Install any pending updates, especially "Security and Critical" updates and "Update for Root Certificates" (often listed as KB931125 or KB2813430).

This error indicates that the Windows operating system on the target machine is missing the necessary Trusted Root Certification Authorities required to validate the digital signature of the Kepware installation files. Kepware installers are digitally signed to ensure security and integrity; if Windows cannot verify this signature due to missing root certificates, the installation is blocked to protect the system. Kepware: "The installer was unable to find required

• Test-NetConnection -ComputerName crl.globalsign.net -Port 80
• Test-NetConnection -ComputerName ocsp.digicert.com -Port 80 (replace with CA endpoints from logs)