Error (209053): Unexpected error in JTAG server --error code 44 - Error (209053): Unexpected error in JTAG server --error code 44 Description You may see this error message when configuring a Stratix® V device using JTAG configuration scheme if all the following conditions are met: Operating system: Windows 10 jtagserver version: 19.1 Standard Edition or later Download cable: Intel® FPGA Download Cable Resolution To work around this problem, use jtagserver version 18.1 Standard Edition instead. The jtagserver version 18.1 Standard Edition is installed when the Intel® Quartus® Prime Standard Edition Software v18.1 or Intel Quartus Prime Standard Edition Software v18.1 Programmer and Tools is installed. Use the following steps to check the jtagserver version: Open a Command Prompt window. Execute the following command: jtagserver -v If the jtagserver version is not Standard Edition v18.1, use the following steps: Open a Command Prompt window. Go to <Intel® Quartus® Prime 18.1 Standard Edition install directory>\quartus\bin64 or <Intel® Quartus® Prime 18.1 Standard Edition Programmer and Tools install directory>\qprogrammer\bin64 Execute the following command: qreg.exe --force --setqdir --jtag Custom Fields values: ['novalue'] Troubleshooting 1508291545 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Standard'] 22.3 19.1 ['Stratix® V FPGAs'] ['novalue'] ['novalue'] ['Download Cable']