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Use this reference section to find breaking changes that might apply to you if you're upgrading your app to a newer version of .NET. You can navigate the table of contents either by .NET version or by technology area.
If you're looking for breaking changes from .NET Framework to .NET, see Breaking changes for migration from .NET Framework to .NET (Core).
You can also view individual issues that detail the breaking changes introduced in .NET in the following GitHub repositories:
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Events
Mar 17, 11 PM - Mar 21, 11 PM
Join the meetup series to build scalable AI solutions based on real-world use cases with fellow developers and experts.
Register nowTraining
Module
Modernize ASP.NET Framework to ASP.NET Core with the .NET Upgrade Assistant - Training
In this module, you'll learn to when, why, and how to modernize an ASP.NET Framework app to ASP.NET Core using the Upgrade Assistant.
Documentation
Learn about .NET's policy for obsoleting and removing APIs.
Navigate to the breaking changes in .NET 8.
Learn about the ways in which code changes can affect compatibility in .NET.