One of the most common misconceptions among new users is that the OPC Quick Client is a separate piece of freeware available on a standalone webpage.
OPC Quick Client is a built-in diagnostic tool included with the KEPServerEX kepware opc quick client download
To recap the download process:
If you only need the Quick Client (not the full server), you can copy the executable from an existing KEPServerEX installation: One of the most common misconceptions among new