Rider 2026.2.1 and ReSharper 2026.2.1 Are Here!

JetBrains released Rider 2026.2.1 and ReSharper 2026.2.1, the first minor updates for the 2026.2 release cycle. Rider 2026.2.1 bundles a refactoring-code skill that makes AI agents 83% faster, 64% cheaper, and 63% fewer tool calls per task across fifteen C# refactoring tasks, and adds a debugging-code skill for C#, F#, C++, and mixed-language projects. ReSharper 2026.2.1 now runs in Out-of-Process mode by default and updates Junie to support Claude Opus 5.

.NET Tools Essential productivity kit for .NET and game developers .NET Tools /dotnet/category/net-tools/ Release /dotnet/category/release/ Releases /dotnet/category/releases/ Rider /dotnet/category/rider/ Rider 2026.2.1 and ReSharper 2026.2.1 Are Here Our first minor update for the 2026.2 release cycle is ready to download. Here’s what’s new. Rider Rider 2026.2 put AI-assisted development front and center, and v2026.2.1 keeps that momentum going: - The bundled refactoring-code skill helps AI agents refactor code faster and at lower cost. Get the full story https://blog.jetbrains.com/dotnet/2026/08/17/rider-refactoring-code-skill/ . The refactoring-code skill, bundled in JetBrains Rider Median task time 83% faster Cost per solved task 64% cheaper Tool calls per task 63% fewer Medians across fifteen C refactoring tasks, each run roughly ten times with the same model and the same prompts. The only difference between the two arms was whether the agent could call Rider’s refactoring engine. - The bundled debugging-code skill lets AI agents investigate runtime issues in C , F , C++, and mixed-language projects, whether they’re built with .NET, Unity, or Unreal Engine. Agents can set breakpoints, step through code, inspect values and thread context, follow the call order, and check which branches are taken or whether execution reaches a specific line. - Rider’s quality-check hooks now support Codex in addition to Claude Code. - The bundled dottrace-analyze skill can now analyze snapshots captured while profiling Unity projects. Note for Unreal Engine developers: The recommended skills for UE C++ – ue-code-authoring and ue-test-authoring – have been updated, but update notifications for them aren’t being displayed yet. If you already have the skills installed, please uninstall them and reinstall their latest versions by going to Settings | Tools | AI Assistant | Skills . For the full overview, visit the What’s New in Rider https://www.jetbrains.com/rider/whatsnew/ page. You can also find the full list of fixes included in this build in our issue tracker https://youtrack.jetbrains.com/issues/RIDER?q=%23Resolved%20Available%20in:%202026.2.1 . ReSharper The big news 🎉: Starting with 2026.2.1, ReSharper now runs in Out-of-Process OOP mode by default unless you’ve turned it off. This is possible because dotCover now supports OOP mode. Diagramming has improved as well. You can now explore type dependency and project dependency diagrams in OOP mode, so there’s no need to switch back to In-Process mode. Last but not least, we’ve updated Junie to a new version that adds support for Claude Opus 5, so you can now pick it as the model powering your sessions. For more information, visit the What’s New in ReSharper https://www.jetbrains.com/resharper/whatsnew/ page. The full list of fixes included in this build is available in our issue tracker https://youtrack.jetbrains.com/issues?q=Project:%20RSRP,%20RSCPP,%20dotTrace,%20dotMemory,%20dotCover,%20dotPeek,%20Profiler,%20DPA%20Available%20in:%202026.2.1 %20 . That’s all for this update. Try out the new features and let us know what you think in the comments below or in our issue trackers Rider https://youtrack.jetbrains.com/issues/RIDER , ReSharper https://youtrack.jetbrains.com/issues/RSRP . Subscribe to a monthly digest curated from the .NET Tools blog: