Download the API Portability Analyzer as a console app or install the extension for Visual Studio 2017/2019 (note: it is not supported in Visual Studio 2022 and later).
Set your target platforms (e.g., .NET 8.0) in the tool settings. Run Analysis: portability analyzer new
If you prefer the classic Portability Analyzer Console App , here is how to get started: Download the API Portability Analyzer as a console