> For the complete documentation index, see [llms.txt](https://www.pinvoke.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.pinvoke.dev/amsi/amsiinitialize.md).

# AmsiInitialize

```csharp
[DllImport("Amsi.dll", ExactSpelling = true)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern unsafe HRESULT AmsiInitialize(
    PCWSTR appName,
    HAMSICONTEXT* amsiContext);
```

[HAMSICONTEXT](/antimalware/hamsicontext.md)