Error when opening a .razor file that is part of a slnx solution

Radzen Blazor for Visual Studio
1

Visual Studio 2026 introduces the new .slnx solution format. Unfortunately, Radzen seems to have issues with at. If I open a .razor file in Visual Studio, I get this error:

Failed to open D:\Workspaces\MySolution.slnx
Microsoft.Build.Exceptions.InvalidProjectFileException: No file format header found.

Looks like you need to add support for this file format as well for Radzen Blazor for Visual Studio…

Opening the same .slnx in Radzen Blazor Studio (not the VS addon) seems to work without any issues.

2

Hi @JustJoe,

Did you try the latest version 1.29.0 which we released today? It should work fine with .slnx files.

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3

Thanks! That did the trick.