For building libraries that work across different .NET implementations. ASP.NET Core: For modernizing web applications. The "New" Shift: Portability Analyzer vs. Upgrade Assistant
Whether you are migrating a legacy .NET Framework application to the modern .NET 8/9 ecosystem or ensuring your libraries support multi-platform environments like Linux and macOS, understanding your code’s "portability score" is essential. The (often referred to as API Port or simply the Portability Analyzer ) has long been the gold standard for this task.
Right-click your project and select Analyze Assembly Portability . portability analyzer new
This is the current primary tool for migration. It includes an "Analyze" command that provides portability reports similar to the original analyzer but with a richer, guided UI within Visual Studio or via a CLI.
Set your target platforms (e.g., .NET 8.0) in the tool settings. Run Analysis: For building libraries that work across different
A newer UI-driven tool specifically for binary analysis that offers color-coded dependency graphs (gray for safe, yellow for warnings, red for errors). How to Use the .NET Portability Analyzer
However, the landscape is shifting. While the classic Portability Analyzer remains available as a console app, Microsoft has increasingly integrated these capabilities into "new" tools like the to provide a more streamlined developer experience. What is the .NET Portability Analyzer? Upgrade Assistant Whether you are migrating a legacy
The New Era of Code Portability: Mastering the .NET Portability Analyzer
The tool generates an Excel or HTML report containing: Portability Summary: A percentage score for each assembly.
While many developers still search for the "new Portability Analyzer," it is important to note that the standalone tool's backend service has been deprecated. For a modern, supported experience, Microsoft recommends the following alternatives: