migrate-dotnet10-to-dotnet11

name	migrate-dotnet10-to-dotnet11
description	Migrate a .NET 10 project or solution to .NET 11 and resolve all breaking changes. This is a MIGRATION skill — use it when upgrading from .NET 10 to .NET 11, NOT for writing new programs. USE FOR: upgrading TargetFramework from net10.0 to net11.0, fixing build errors after updating the .NET 11 SDK, resolving source-breaking and behavioral changes in .NET 11 runtime, C# 15 compiler, and EF Core 11, adapting to updated minimum hardware requirements (x86-64-v2, Arm64 LSE), and updating CI/CD pipelines and Dockerfiles for .NET 11. DO NOT USE FOR: .NET Framework migrations, upgrading from .NET 9 or earlier, greenfield .NET 11 projects, or cosmetic modernization unrelated to the upgrade. NOTE: .NET 11 is in preview. Covers breaking changes through Preview 3.
license	MIT

.NET 10 → .NET 11 Migration

Migrate a .NET 10 project or solution to .NET 11, systematically resolving all breaking changes. The outcome is a project targeting net11.0 that builds cleanly, passes tests, and accounts for every behavioral, source-incompatible, and binary-incompatible change introduced in .NET 11.

Note: .NET 11 is currently in preview. This skill covers breaking changes documented through Preview 3.

When to Use

• Upgrading TargetFramework from net10.0 to net11.0
• Resolving build errors or new warnings after updating the .NET 11 SDK
• Adapting to behavioral changes in .NET 11 runtime, ASP.NET Core 11, or EF Core 11
• Updating CI/CD pipelines, Dockerfiles, or deployment scripts for .NET 11
• Fixing C# 15 compiler breaking changes after SDK upgrade

When Not to Use