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…
Install
npx skills add dotnet/skills --skill migrate-dotnet10-to-dotnet11npx skills add dotnet/skills --skill migrate-dotnet10-to-dotnet11 -a claude-code -gnpx skills add dotnet/skills --skill migrate-dotnet10-to-dotnet11 -a codex -ggemini skills install https://github.com/dotnet/skills.git --path plugins/dotnet-upgrade/skills/migrate-dotnet10-to-dotnet11gh skill install dotnet/skills migrate-dotnet10-to-dotnet11git clone --depth 1 https://github.com/dotnet/skills /tmp/dotnet__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/dotnet__skills/plugins/dotnet-upgrade/skills/migrate-dotnet10-to-dotnet11 ~/.claude/skills/migrate-dotnet10-to-dotnet11 # Claude Code
cp -R /tmp/dotnet__skills/plugins/dotnet-upgrade/skills/migrate-dotnet10-to-dotnet11 ~/.agents/skills/migrate-dotnet10-to-dotnet11 # Codex, Cursor, Gemini CLI, Copilot, OpenCode