Microsoft introduced .slnx, a new XML-based solution file format for .NET that replaces the verbose, GUID-heavy .sln format. The new format is human-readable, easier to merge in version control, and aligns with the simplified .csproj format. You can migrate existing solutions using either the .NET CLI command 'dotnet sln migrate' or Visual Studio's 'Save As' feature. The format is supported in Visual Studio 2022 (v17.13+), Visual Studio 2026, Rider, and .NET 9 SDK (9.0.200+). While technically in preview, it's stable and safe for production use, with the primary benefit being dramatically fewer merge conflicts.
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The problem with .slnWhat .slnx looks likeHow to Migrate TodayWhy You Should CareIs it Ready?Sort: