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highDotNetdotnet new slnbreaking changelearn_dotnet · Nov 11, 2025
Breaking change - `dotnet new sln` defaults to SLNX file format - .NET
In .NET 10, the `dotnet new sln` command now defaults to creating SLNX-format solution files instead of the traditional SLN format, which may break existing build scripts and tooling that expect the old format. This change affects developers who rely on specific solution file formats for their projects.
“Learn about the breaking change in .NET 10 where dotnet new sln creates SLNX-format solution files instead of SLN-format files.”
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developer
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cloudhybridon_premises
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AZ-204AZ-205
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