Kepware The Installer Was Unable To Find Required Root Certificates Exclusive | Reliable |

If the machine is air-gapped (no internet), you must manually inject the certificates.

The error message typically occurs during the installation or upgrade of Kepware products (such as KEPServerEX) when the Windows operating system lacks the necessary digital signatures to verify the installer's authenticity. This is common on systems without internet connectivity, those where Windows Updates are disabled, or older versions like Windows 7. Core Causes If the machine is air-gapped (no internet), you

: For systems without internet access, you must manually install the required root certificates into the Trusted Root Certification Authorities Core Causes : For systems without internet access,

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. Obtain the necessary root certificate files (

Obtain the necessary root certificate files ( .cer or .crt ) from a machine with internet access or directly from the PTC Support Portal .