Hello, I am having trouble running DPDK on Windows. I am trying to use the example programs and testpmd, but they fail with some errors (see outputs below). The testpmd program also does not go into interactive mode and exits after a keypress. I am using Windows Server 2022 with a Mellanox ConnectX-4 LX Card using Win-OF 2 2.90.50010 / SDK 2.90.25518. I am using the current build (DPDK Version 22.07-rc3). I followed to DPDK Windows guide, but currently I always get the following error: mlx5_common: DevX read access NIC register=0X9055 failed errno=0 status=0 syndrome=0 does anybody have an idea how to resolve this problem, or at least get some more information why it failed? Helloworld output: C:\dpdk\build\examples>dpdk-helloworld.exe EAL: Detected CPU lcores: 24 EAL: Detected NUMA nodes: 2 EAL: Multi-process support is requested, but not available. EAL: Probe PCI driver: mlx5_pci (15b3:1015) device: 0000:06:00.0 (socket 0) mlx5_common: DevX read access NIC register=0X9055 failed errno=0 status=0 syndrome=0 mlx5_net: mlx5_os_dev_shared_handler_install: is not supported mlx5_net: Rx CQE 128B compression is not supported. EAL: Probe PCI driver: mlx5_pci (15b3:1015) device: 0000:06:00.1 (socket 0) mlx5_common: DevX read access NIC register=0X9055 failed errno=0 status=0 syndrome=0 mlx5_net: mlx5_os_dev_shared_handler_install: is not supported mlx5_net: Rx CQE 128B compression is not supported. hello from core 1 hello from core 2 hello from core 3 hello from core 4 hello from core 5 hello from core 6 hello from core 7 hello from core 8 hello from core 16 hello from core 22 hello from core 11 hello from core 12 hello from core 13 hello from core 14 hello from core 15 hello from core 9 hello from core 17 hello from core 18 hello from core 19 hello from core 20 hello from core 21 hello from core 23 hello from core 0 hello from core 10 testpmd output: C:\dpdk\build\app>dpdk-testpmd.exe EAL: Detected CPU lcores: 24 EAL: Detected NUMA nodes: 2 EAL: Multi-process support is requested, but not available. EAL: Probe PCI driver: mlx5_pci (15b3:1015) device: 0000:06:00.0 (socket 0) mlx5_common: DevX read access NIC register=0X9055 failed errno=0 status=0 syndrome=0 mlx5_net: mlx5_os_dev_shared_handler_install: is not supported mlx5_net: Rx CQE 128B compression is not supported. EAL: Probe PCI driver: mlx5_pci (15b3:1015) device: 0000:06:00.1 (socket 0) mlx5_common: DevX read access NIC register=0X9055 failed errno=0 status=0 syndrome=0 mlx5_net: mlx5_os_dev_shared_handler_install: is not supported mlx5_net: Rx CQE 128B compression is not supported. testpmd: create a new mbuf pool : n=331456, size=2176, socket=0 testpmd: preferred mempool ops selected: ring_mp_mc testpmd: create a new mbuf pool : n=331456, size=2176, socket=1 testpmd: preferred mempool ops selected: ring_mp_mc Configuring Port 0 (socket 0) mlx5_net: port 0 failed to set defaults flows Fail to start port 0: Invalid argument Configuring Port 1 (socket 0) mlx5_net: port 1 failed to set defaults flows Fail to start port 1: Invalid argument Please stop the ports first Done No commandline core given, start packet forwarding Not all ports were started Press enter to exit Stopping port 0... Stopping ports... Done Stopping port 1... Stopping ports... Done Shutting down port 0... Closing ports... mlx5_net: mlx5_os_dev_shared_handler_uninstall: is not supported Port 0 is closed Done Shutting down port 1... Closing ports... mlx5_net: mlx5_os_dev_shared_handler_uninstall: is not supported Port 1 is closed Done Bye... Kind regards, Robert