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 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
Right-click the certificate file and select . If the error persists
C:\Program Files (x86)\PTC\ThingWorxIndustrialConnectivity\bootstrap.log Look for entries like CheckRootCert, GlobalSign Failed to pinpoint the missing authority. Common Scenarios and Troubleshooting If the error persists, review the installation logs