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If your Kepware server has internet access (or temporary access), this is the simplest fix.
Do not let Windows "Automatically select the certificate store." Instead, choose Place all certificates in the following store and browse to Trusted Root Certification Authorities . Finish the import and restart the Kepware installer. Solution 3: Update via Windows Update (WSUS)
When you run the installer, Windows tries to verify these signatures. If your operating system is missing the specific "Root Certificates" needed to validate those signatures—and the computer cannot connect to the internet to download them automatically—the installer will abort to protect the system. Solution 1: The "Quick Fix" (Internet Access)
Industrial servers (SCADA, MES, or historians) are frequently isolated from the internet for cybersecurity reasons. This preventing Windows from using its Automatic Root Certificates Update feature to fetch new certificates dynamically.
You can also use the Windows certutil tool to force the installation of a certificate via the (Run as Administrator) : certutil -addstore "Root" .cer Why This Happens
Modern Kepware software binaries are signed using SHA-2 digital certificates issued by global Certificate Authorities (CAs), such as or DigiCert . During installation, the OS checks its internal certificate store to confirm the publisher is trusted. This verification fails in two primary scenarios:
For further assistance, you can refer to the official PTC Kepware Support Article CS292168 or open a ticket at My Kepware if manual installation fails .
An incorrect system date can break certificate validation.
Right-click the certificate file and select . Choose Local Machine as the store location.
A manufacturing plant attempts to upgrade Kepware 6.14 to 6.15 on a Siemens SIMATIC IPC (Windows 10 IoT LTSC, no internet).