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On any HPE platform running Microsoft Windows Server, and configured with any of the HPE NVIDIA ConnectX-6 Based Network Adapters with mlx5.sys driver version 25.1.26647 listed in the Scope section below; link flapping and repeated reset events may be experienced.When this issue occurs, the network adapters will experience Network Driver Interface Specification (NDIS) reset events with an Event ID 10400 in the Windows System Event Log similar to the following:This event may occur repeatedly as the network adapter experiences Network Driver Interface Specification (NDIS) initiated reset events. These reset events will cause periodic link flapping.Errors can also be confirmed on a single system or on a cluster using the following Powershell commands to verify the issue:PowerShell command to find the errors on a single nodeGet-WinEvent -ComputerName $_.Name -FilterHashtable @{LogName="System";ID=10400, 386} -ErrorAction SilentlyContinue | Format-Table -Property Id,TimeCreated,ContainerLog,LevelDisplayName,Message}PowerShell command to find the errors across a clusterGet-ClusterNode | ForEach-Object {Get-WinEvent -ComputerName $_.Name -FilterHashtable @{LogName="System";ID=10400, 386} -ErrorAction SilentlyContinue | Format-Table -Property MachineName, Id,TimeCreated,ContainerLog,LevelDisplayName,Message}Commands to verify and validate the current driver versionPowerShell command to find the driver version on a single nodeGet-NetAdapter | Where-Object { $_.DriverFileName -eq "mlx5.sys" } | Sort-Object -Property Name | Format-Table -View DriverPowerShell command to find the driver versions on a clusterInvoke-Command -ComputerName (Get-ClusterNode).Name -ScriptBlock { Get-NetAdapter | Where-Object { $_.DriverFileName -eq "mlx5.sys" } | Sort-Object -Property Name | Format-Table -View Driver }NVIDIA strongly recommends updating the network adapter firmware to an associated / matching version when the network adapter driver is updated.The mlx5.sys driver version 25.1.26647 driver package was initially released as part of the SPP version 2025.07.00.00 and it may be installed automatically as part of running that SPP package.SPP 2025.09.00.00 (or later) should have the mlx5.sys driver version 25.4.26768 (or later) as part of the included content; therefore, updating affected systems to SPP version 2025.09.00.00 should resolve this issue.
Any HPE platform running Microsoft Windows Server, and configured with any of the following HPE NVIDIA ConnectX-6 Based Network Adapters with mlx5.sys driver version 25.1.26647:HPE Ethernet 25/50Gb 2-port SFP56 MCX623102AS-GDAT Adapter (P08464-B21)HPE InfiniBand HDR/Ethernet 200Gb 1-port QSFP56 PCIe3 x16 MCX653105A-HDAT Adapter (P06154-B21)HPE InfiniBand HDR/Ethernet 200Gb 1-port QSFP56 PCIe4 x16 MCX653105A-HDAT Adapter (P23664-B21)HPE InfiniBand HDR/Ethernet 200Gb 1-port QSFP56 PCIe4 x16 OCP3 MCX653435A-HDAI Adapter (P31323-B21)HPE InfiniBand HDR/Ethernet 200Gb 2-port QSFP56 PCIe4 x16 MCX653106A-HDAT Adapter (P31324-B21)HPE InfiniBand HDR/Ethernet 200Gb 2-port QSFP56 PCIe4 x16 OCP3 MCX653436A-HDAI Adapter (P31348-B21)HPE InfiniBand HDR100/Ethernet 100Gb 1-port QSFP56 PCIe3 x16 MCX653105A-ECAT Adapter (P06250-B21)HPE InfiniBand HDR100/Ethernet 100Gb 1-port QSFP56 PCIe4 x16 MCX653105A-ECAT Adapter (P23665-B21)HPE InfiniBand HDR100/Ethernet 100Gb 2-port QSFP56 PCIe3 x16 MCX653106A-ECAT Adapter (P06251-B21)HPE InfiniBand HDR100/Ethernet 100Gb 2-port QSFP56 PCIe4 x16 MCX653106A-ECAT Adapter (P23666-B21)Mellanox MCX623105AS-VDAT Ethernet 200Gb 1-port QSFP56 Adapter for HPE (P10180-B21)Mellanox MCX623106AS-CDAT Ethernet 100Gb 2-port QSFP56 Adapter for HPE (P25960-B21)Mellanox MCX631102AS-ADAT Ethernet 10/25Gb 2-port SFP28 Adapter for HPE (P42044-B21)Mellanox MCX631432AS-ADAI Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE (P42041-B21)
To resolve this issue, download and install the mlx5.sys driver version 25.4.26768 (or later) available in the SPP version 2025.09.00.00, or available at the following URLs (either driver only or the WinOF-2 full package):Driver OnlyMellanox CX5 and CX6DX Driver for Microsoft Windows Server 2022 Version 25.4.26768.0Mellanox CX5 and CX6DX Driver for Microsoft Windows Server 2025 Version 25.4.26768.0WinOF-2 full packageNvidia WinOF-2 InfiniBand and Ethernet driver [ConnectX-5, ConnectX-6 and ConnectX-7] for Microsoft Windows Server 2022 Version 25.4.50020Nvidia WinOF-2 InfiniBand and Ethernet driver [ConnectX-5, ConnectX-6 and ConnectX-7] for Microsoft Windows Server 2025 Version 25.4.50020Note:For Azure Local HCI systems, HPE recommends the Solution Builder Extension (SBE) for the appropriate recipe.
Operating Systems Affected:Microsoft Windows Server 2022, Microsoft Windows Server 2025
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