Typemock Isolator 9.4 Released with .NET 10 and Visual Studio 2026 Support

Typemock has announced the release of Isolator 9.4, the latest version of its .NET unit testing mocking tool. This update introduces comprehensive support for .NET 10 and the Visual Studio 2026 Insiders build.

According to Typemock, this expanded support allows developers to leverage their existing test suites while adopting the newest .NET features. Eli Lopian, CEO of Typemock, stated, "Our goal with Isolator 9.4 was to remove friction and give developers complete confidence as they adopt the next generation of .NET without rewriting existing tests or bending their architecture just to make it ‘testable.’"

A significant enhancement in Isolator 9.4 is that its SmartRunner feature now automatically aligns with the same .NET runtime as the test project. SmartRunner is designed to inform developers which tests are affected by code changes, enabling them to run only the relevant and necessary tests.

The internal architecture selection logic has also been improved, providing a more predictable experience for projects that utilize both x86 and x64 components. These updates are intended to minimize runtime mismatches, prevent unintended x86 launches, and ensure consistent test behavior across multi-targeted solutions.

Isolator 9.4 also offers streamlined installation and uninstallation processes. This includes more reliable detection of Visual Studio 2026 installations, enhanced documentation for the build pipeline, thorough cleanup of all directories, and improved fallback behavior during component probing.

Furthermore, this release features a fully modernized NuGet package structure. Key improvements include the README file being displayed directly within NuGet, an embedded icon, the inclusion of the license file, simplified Target Framework Moniker (TFM) mappings, and cleaner dependency groups.