"The installer was unable to find required root certificates" typically occurs during the installation or upgrade of KEPServerEX
If the problem persists after trying the steps above, contact PTC Kepware support with the installer log – they can provide the exact thumbprint of the required root certificate for your product version. "The installer was unable to find required root
This method may fail if the installer has hard-coded certificate validation. It works primarily for older versions. Kepware often provides different installation packages
Kepware often provides different installation packages. The full setup package strictly enforces signature validation. "The installer was unable to find required root
: Users on older operating systems like Windows 7 or Windows XP SP3 frequently encounter this because these versions no longer receive automatic certificate updates.
Kepware's KEPServerEX is widely considered the industry standard for industrial connectivity, though its installation process can be sensitive to modern security standards on older or air-gapped systems.