Search for the SPB (Silicon-Package-Board) 17.4 release.
Point the License Manager to your official license file ( license.dat ) provided by Cadence or your distributor. cadence orcad and allegro 17.4 download
In version 17.4, Cadence unified the environment significantly, allowing seamless database compatibility and a shared user interface architecture between OrCAD and Allegro. Key Features of Cadence 17.4 Search for the SPB (Silicon-Package-Board) 17
Once you have downloaded the installation files from the official Cadence portal, follow these general steps to get your environment up and running: Cadence unified the environment significantly