Factorysoft Opc Client Install «DIRECT»

| Problem | Likely Cause | Solution | |---------|--------------|----------| | “OPC Server not found” | OPC Core Components missing | Install from OPC Foundation | | Access denied (E_ACCESSDENIED) | DCOM permissions | Run dcomcnfg → give Anonymous/Everyone launch & activation rights | | Installer hangs | Antivirus blocking | Disable AV temporarily | | Cannot browse remote server | Firewall blocking DCOM (port 135) | Allow port 135 TCP in Windows Firewall | | “Class not registered” | 32‑vs‑64-bit mismatch | Use 32‑bit OPC Client for 32‑bit OPC servers |