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

"The installer was unable to find required root certificates"

  1. Check installer logs (where to find them)

This error occurs when the Kepware installer cannot verify the digital signature of its setup files because the required Root Certificate Authorities (CAs) are missing or outdated on your Windows system. This is common on offline machines or older operating systems like Windows 7 that haven't received recent security updates. Immediate Solutions "The installer was unable to find required root

  • Air-gapped machines: Industrial PCs that never connect to the internet lack Windows Update, which normally refreshes the root certificate list automatically.
  • Legacy Windows installations: Windows 7, Windows Server 2012, or older LTSB/LTSC builds that have outdated certificate stores.
  • Heavily locked-down environments: Corporate or industrial networks where IT admins have disabled automatic root certificate updates via Group Policy.
  • Post-cleanup operations: After using disk cleaners (e.g., CCleaner) that inadvertently removed root certificates.

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