kb5128778

KB5128778 is a Windows update that refreshes the AMD MIGraphX Execution Provider, the Windows ML component that routes supported ONNX model work to AMD GPUs, to version 2.2609.2.0 on Windows 11 version 26H1 across all editions. Released September 22, 2026, it installs automatically through Windows Update and supersedes KB5103219, so no manual action is required. Microsoft describes the change only as improvements, which means administrators and developers running local AI workloads on AMD Radeon hardware can verify installation and prerequisites but should not expect a documented performance figure. The tag is most useful for tracking this specific update and confirming deployment status.