ID:208502 Unable to scan device chain. <Hardware not connected, cannot scan JTAG chain, port in use, or check the hardware setup.> Please use JTAG Chain Debugger to troubleshoot the JTAG chain.

CAUSE: An attempt to auto detect the JTAG chain failed. The Intel Quartus Prime software is suggesting you to open the JTAG Chain Debugger to assist in isolating and resolving the failure.

ACTION: Click OK to close the message dialog box and use the JTAG Chain Debugger to troubleshoot the JTAG chain.