Source code syntax trees, dependency graphs, and configuration files Identifies gaps only
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.
in Visual Studio 2022 or later. Microsoft has deprecated it in favor of the .NET Upgrade Assistant , which integrates binary analysis for the same purpose. Microsoft Learn 1. Modern Alternative: .NET Upgrade Assistant
Use the command ApiPort.exe analyze -f [path-to-binaries] . portability analyzer new
However, the Portability Analyzer is not a silver bullet, and understanding its limitations is crucial for a successful migration. The tool analyzes presence , not behavior . It can tell a developer that a specific method exists on the target platform, but it cannot guarantee that the method behaves identically. In some cases, APIs were ported to .NET Core but implemented differently due to cross-platform constraints (e.g., differences in file system case sensitivity or registry access).
Because the backend service for ApiPort has been shut down, you must use it if you still choose to run it. Microsoft Learn How to Use the (Legacy) Portability Analyzer
The New Era of Portability Analyzer: Modernizing Applications in 2026 Microsoft has deprecated it in favor of the
Uses incremental parsing and persistent symbol database.
Select from the context menu to launch the interactive, guided workflow.
Migrating legacy applications to modern frameworks used to require weeks of manual code inspection. Today, development teams are increasingly relying on automated tooling to evaluate codebase compatibility. The release of the new portability analyzer tools has transformed this assessment process from a guessing game into a precise, data-driven strategy. However, the Portability Analyzer is not a silver
Code portability is a critical requirement for modern software development. As development ecosystems evolve, moving applications across different framework versions, operating systems, and cloud environments becomes a frequent necessity. The is a modernized diagnostic tool designed to help developers evaluate the flexibility of their source code, identify platform-dependent dependencies, and estimate the effort required for system migration.
Whether you are moving from legacy .NET Framework to modern .NET 8/9, or transitioning workloads to cloud-native environments, understanding how the new generation of portability analysis works is essential for a smooth migration. What is the New Portability Analyzer?
When transitioning a legacy architecture to modern multi-platform runtimes, the analyzer regularly highlights specific, framework-bound features.