Windows 7 compatibility for Microsoft.ML.OnnxRuntime NuGet package with C#

[chanbee72]

Describe the issue

I am developing a program in C# using Visual Studio and would like to perform inference with ONNX models on Windows 7.

Even after downgrading the Microsoft.ML.OnnxRuntime NuGet package, I am unable to successfully load a model session on Windows 7.

According to the official documentation (https://onnxruntime.ai/docs/reference/compatibility.html
), ONNX Runtime is listed as "May be compatible with Windows 7+".

Could you please advise which NuGet package versions are compatible with Windows 7, and if there is a recommended way to run ONNX Runtime on this OS?

To reproduce

sess = new InferenceSession(targetFile);

Urgency

No response

Platform

Windows

OS Version

Windows 7

ONNX Runtime Installation

Built from Source

ONNX Runtime Version or Commit ID

1.21.0 / 1.6.0

ONNX Runtime API

C#

Architecture

X64

Execution Provider

Default CPU

Execution Provider Library Version

No response

[xadupre]

I assume your model was exported with a certain opset. Did you try the first version of onnxruntime supporting that opset? If it does not work, one option would be to recompile onnxruntime on your environment.

[snnn]

Try building the code with a Win7 Windows SDK and see if it works. Sorry I couldn't remember what the last version was that still supported Win7.