If the steps above do not resolve the issue, you may need to reach out to PTC Kepware Support for specialized advice, especially if you are working on a strictly legacy system like Windows 7 Professional SP-1.
: The primary solution recommended by PTC is to apply all pending Windows Updates, which naturally refreshes the root certificate store. If the steps above do not resolve the
The primary cause of this error is the absence of specific Trusted Root Certification Authorities within the Windows certificate store. Kepware installers are digitally signed to ensure integrity and authenticity. When the installer runs, it checks the local machine's certificate store to validate that signature. Kepware installers are digitally signed to ensure integrity
This comprehensive technical guide breaks down why this error occurs on your industrial machines and provides actionable step-by-step solutions to resolve it. Root Cause Analysis: Why the Kepware Installer Fails Root Cause Analysis: Why the Kepware Installer Fails
Modern PTC Kepware installation files are digitally signed to ensure authenticity and code integrity. The Windows CryptoAPI system validates these digital signatures against trusted root certificates stored locally on your machine.
Choose and place it specifically in the Trusted Root Certification Authorities store.
Obtain the required .cer or .crt files from a machine with internet access or the PTC Support Portal .