: If you are trying to connect via OPC UA after installation and see certificate errors, you may need to use the OPC UA Configuration Manager to manually trust the server's self-signed certificate.
If the error persists, review the installation logs to identify which specific certificate is missing. You can find these at: C:\Program Files (x86)\Kepware\KEPServerEX\bootstrap.log : If you are trying to connect via
Manually choose the store for the placement. The error message typically occurs during the installation
The error message typically occurs during the installation or upgrade of PTC Kepware products when the Windows operating system lacks the necessary updated root certificates to verify the installer's digital signature. This is common on systems that are offline or have disabled Windows Updates, as they cannot automatically download new Certificate Revocation Lists (CRLs) or Trusted Root CAs. Primary Solutions : If you are trying to connect via