Where to install or upgrade the licence?

As of v2.5:

Paste the licence ID and activation password in the respective fields and click Next.

(With version 2.5 of PiiGAB M-Bus OPC Server / Explorer we change the licensing system.

Upon delivery you recieve a delivery note where a license ID as well as an activation code is included. You no longer have to send in your SystemID for activation. You can also easily move your license from one computer to another on your own, free of charge.

This assumes that you have the latest version. Otherwise, the previous licence management will continue to apply).

Below applies to versions <= 2.4.1

Start PiiGAB M-Bus Explorer and go to the Tools menu. Select Licence... to bring up the Licence Manager. Copy the licence into the Registration Code field and press Save Registration Code.