I go to open the project in VS 2013 and I get the error:
QuickBooksASPNetCore2OpenIDConnect.csproj : 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. QuickBooksASPNetCore2OpenIDConnect.csproj
I go to open the project in VS 2013 and I get the error:
QuickBooksASPNetCore2OpenIDConnect.csproj : 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. QuickBooksASPNetCore2OpenIDConnect.csproj