Verilog HDL or VHDL error: cannot open verilog/VHDL file '<file name>' - Verilog HDL or VHDL error: cannot open verilog/VHDL file '<file name>' Description In the Intel® Quartus® Prime Pro Edition software version 20.1 and earlier, you may see this error if your design includes files that were encrypted using the Intel® Quartus® Prime Pro edition software version 20.2 or later. Resolution To avoid this error, either compile the design in the Intel® Quartus® Prime Pro Edition software version 20.2 or later. regenerate/reencrypt the files using the Intel® Quartus® Prime Pro edition software version 20.1 or earlier. Custom Fields values: ['novalue'] Troubleshooting 22010603028 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 20.2 20.2 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']