Why does the Nios® V processor fail to generate HDL with an add_fileset_file error message in Quartus® Prime Standard Edition from Windows OS? - Why does the Nios® V processor fail to generate HDL with an add_fileset_file error message in Quartus® Prime Standard Edition from Windows OS? Description Due to a problem in the Quartus® Prime Standard Edition Software versions 22.1, 23.1, and 24.1, the Nios® V processor might fail to generate HDL with an error message about add_fileset_file. This issue is present only on Windows OS. Example error message: Error: add_fileset_file: No such file <Nios V processor SystemVerilog file> while executing “add_fileset_file $current_sim/<Nios V processor SystemVerilog file> SYSTEM_VERILOG PATH $current_sim/<Nios V processor SystemVerilog file> $attr” This is because the Nios V processor hw.tcl is calling add_fileset_file on an unsupported simulator. These unsupported simulators are referring to simulators that are not supported in Windows OS - Cadence Simulator and Synopsys VCS* and VCS MX. Resolution To work around this problem in the Quartus® Prime Standard Edition Software version 24.1, download and install the patches below. Quartus® Prime Stardand Edition Software v24.1 Patch 0.01std for Windows (.exe) Quartus® Prime Stardand Edition Software v24.1 Patch 0.01std for Linux (.run) Readme for Quartus® Prime Stardand Edition Software v24.1 Patch 0.01std (.txt) This problem is currently scheduled to be resolved in a future release of the Quartus® Prime Standard Edition Software. Additional Information For information on the simulators’ supported platforms, refer to the Quartus® Prime Standard Edition User Guide: Third-party Simulation - Supported Simulators . Custom Fields values: ['novalue'] Troubleshooting 15013172855, 16026906584, 15016777434, 15016444404 False ['Nios® V/m Processor'] ['FPGA Dev Tools Quartus® Prime Software Standard'] novalue 22.1 ['Agilex™ FPGA Portfolio', 'Arria® 10 Bare Die', 'Cyclone® Bare Die', 'MAX® CPLDs', 'Stratix® FPGAs'] ['novalue'] ['novalue'] ['novalue']