You may observe that the Clock Control application shows the 'Connecting to the Target Board' message indefinitely without achieving a successful connection to the Intel® Stratix® 10 SoC Development Kit.
To successfully connect the Clock Control application to the Intel® Stratix® 10 SoC Development Kit, download the latest Intel® Stratix®10 SX SoC Package Installer from the following link and update the firmware of the Intel® MAX® 10 device included in the development kit.
You can find the Intel® MAX® 10 pof file in the following path: <Stratix 10 SX SoC Package Installer>\examples\system_max10\