Why do MSI's not work on my altpcie_demo application for the PCI Express Avalon-ST High-Performance Reference Design? - Why do MSI's not work on my altpcie_demo application for the PCI Express Avalon-ST High-Performance Reference Design? Description Due to a problem with the provided driver information file( .inf ), the reference design Device ID does not match that expected by the driver and Message Signal Interrupts (MSIs) are not enabled. This problem causes the kit to be displayed in the Windows® Device Manager under "Other devices" as "PCI Device" with a yellow "!" warning icon next to it. The reference design can be found here: http://www.altera.com/support/refdesigns/ip/interface/ref-pciexpress-hp.html The demo application package is here: https://www.altera.com/support/software/download/refdesigns/ip/interface/dnl-pciexpress-hp.jsp Resolution To correct the device ID and enable MSIs, copy the attached ( .inf ) and ( .bat ) files to: < your path >/altpcie_demo/JungoDrivers Then run the ( .bat ) file as Administrator and restart your PC. Updated Information File Updated Batch File Related Articles Why does my altpcie_demo application display as PCI Device under Other Devices in the Windows Device Manager for the PCI Express Avalon-ST High-Performance Reference Design? Custom Fields values: ['novalue'] Troubleshooting novalue False ['Interrupt'] ['FPGA Dev Tools Quartus II Software'] novalue 12.1.1 ['Arria® II GX FPGA', 'Arria® II GZ FPGA', 'Arria® V GX FPGA', 'Cyclone® IV GX FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Stratix® IV GT FPGA', 'Stratix® IV GX FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']