Cannot open csproj after installing aspnetcore-spa #989

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fergalmoran · 2025-08-09T17:18:27Z

fergalmoran commented

2025-08-09 17:18:27 +00:00

Originally created by @im1dermike on 2/23/2017

I ran yo aspnetcore-spa on my machine and it successfully created various files. When I try to open the *.csproj file up in VS2015 Community, I get the following error:

The default XML namespace of the project must be the MSBuild XML namespace. If the project is authored in the MSBuild 2003 format, please add xmlns="http://schemas.microsoft.com/developer/msbuild/2003" to the element. If the project has been authored in the old 1.0 or 1.2 format, please convert it to MSBuild 2003 format.

I attempted to add the suggested xmlns value to the *.csproj file, but get a new error.

FWIW, when I run dotnet --version, it returns 1.0.0-preview2-003131.

*Originally created by @im1dermike on 2/23/2017* I ran `yo aspnetcore-spa` on my machine and it successfully created various files. When I try to open the *.csproj file up in VS2015 Community, I get the following error: > The default XML namespace of the project must be the MSBuild XML namespace. If the project is authored in the MSBuild 2003 format, please add xmlns="http://schemas.microsoft.com/developer/msbuild/2003" to the <Project> element. If the project has been authored in the old 1.0 or 1.2 format, please convert it to MSBuild 2003 format. I attempted to add the suggested xmlns value to the *.csproj file, but get a new error. FWIW, when I run `dotnet --version`, it returns `1.0.0-preview2-003131`.

fergalmoran closed this issue

2025-08-09 17:18:27 +00:00

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Reference: github/JavaScriptServices#989