Why is the Intel® FPGA USB Download Cable not detected by Intel Quartus® Prime Programmer when it is recognized correctly in Device Manager? - Why is the Intel® FPGA USB Download Cable not detected by Intel Quartus® Prime Programmer when it is recognized correctly in Device Manager? Description The Intel® FPGA USB Download Cable may not be detected by Intel Quartus® Prime Programmer even when it is recognized correctly in Device Manager because the version of JTAGServer running as a host is not working properly as a user mode application. Resolution To resolve this problem, use the following steps: 1. Run Windows in SAFE MODE 2. Run “msconfig” in command prompt to bring up System Configuration Window 3. In Service tab, disable “Altera JTAG Server” and then reboot the PC. Custom Fields values: ['novalue'] Troubleshooting FB: 537160; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 16.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['Download Cable PL-USB-BLASTER-RCN']