Why does the Quartus II programmer fail to program the Encyption Key Programming file? - Why does the Quartus II programmer fail to program the Encyption Key Programming file? Description Due to a problem in Quartus® II software, when you program the Encyption Key Programming ( .ekp ) file to Stratix ® V, Arria ® V or Cyclone ® V device using Quartus II programmer, you may see following error. Info (209005): Programming status: Detected failed attempt to program the non-volatile design security key on device 1 Error (209012): Operation failed Resolution To work around this problem, use the JAM ™ Standard Test and Programming Language (STAPL) Format ( .jam ) file instead of the .ekp file to program design security key. To generate the .jam file for design seruity key programming in Stratix V, Arria V or Cyclone V, refer to AN556: Using the Design Security Feature in Altera FPGAs ( PDF ) . This problem is scheduled to be fixed in a future release of the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 12.1 ['Arria® V GT FPGA', 'Arria® V GX FPGA', 'Arria® V GZ FPGA', 'Arria® V ST FPGA', 'Arria® V SX FPGA', 'Cyclone® V E FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Cyclone® V SE FPGA', 'Cyclone® V ST FPGA', 'Cyclone® V SX FPGA', 'Stratix® V E FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']