to manually swap and trust certificates between the client and server. Support Ticket
Modern Kepware installers (v5.20 to v7.x) are digitally signed. During installation, Windows tries to verify this signature against a list of trusted Certificate Authorities (CAs), such as GlobalSign or VeriSign. If your OS cannot find these certificates—often because it hasn't received a Windows Update in a long time—the installer fails to protect you from potentially untrusted software. Step-by-Step Solutions Method 1: The Quick Fix (Run Windows Update) The simplest solution is to let Windows update itself. Go to . Click Check for updates . to manually swap and trust certificates between the
When installing Kepware products (such as KEPServerEX, ThingWorx Kepware Server, or various drivers), users may occasionally encounter a blocking error message stating: If your OS cannot find these certificates—often because
: 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. Click Check for updates