Question

I’m working in a blazor wasm hosted app, it actually works when it runs in visual studio and when I publish the app in IIS it works to. The problem starts when I copy and paste the publish to IIS in another server.
It gives me a lot of errors, but it all look like the next one:
blazor.webassembly.js:1 Error in mono_download_assets: Error: Assert failed: This browser/engine doesn't support WASM SIMD. Please use a modern version. See also https://aka.ms/dotnet-wasm-features
there are like 7 times this error.

I understand that the problem could be WASM SIMD, so I disabled it, but it didnt work.
The project is called Risk, and this is Risk.Server.csproject:

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <WasmEnableSIMD>false</WasmEnableSIMD>
      <BlazorWebAssemblyJiterpreter>false</BlazorWebAssemblyJiterpreter>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="AutoMapper" Version="13.0.1" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.7" />
    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="8.0.7" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.7" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.7" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.7" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.7">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.6.2" />
    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="7.6.3" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..ClientRisk.Client.csproj" />
    <ProjectReference Include="..SharedRisk.Shared.csproj" />
  </ItemGroup>


</Project>

As you can see, I disabled the SIMD on this line: <WasmEnableSIMD>false</WasmEnableSIMD>.
and this is my index.html:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <title>Risk</title>
    <base href="/" />
    <link href="css/bootstrap/bootstrap.min.css" rel="stylesheet" />
    <link href="css/app.css" rel="stylesheet" />
    <link href="Risk.Client.styles.css" rel="stylesheet" />
    <link rel="stylesheet" href="_content/Radzen.Blazor/css/software-base.css">
</head>

<body>
    <div id="app">Loading...</div>

    <div id="blazor-error-ui">
        An unhandled error has occurred.
        <a href="" class="reload">Reload</a>
        <a class="dismiss">????</a>
    </div>
    <script src="_framework/blazor.webassembly.js"></script>  
    <script src="_content/Radzen.Blazor/Radzen.Blazor.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <script>
        window.downloadFile = async (fileName, byteArray) => {
            const blob = new Blob([new Uint8Array(byteArray)]);
            const arrayBuffer = await blob.arrayBuffer();
            const url = URL.createObjectURL(blob);
            const anchorElement = document.createElement('a');
            anchorElement.href = url;
            anchorElement.download = fileName ?? '';
            anchorElement.click();
            anchorElement.remove();
            URL.revokeObjectURL(url);
        }
    </script>


</body>

</html>

I really dont know what else to do, if anyone can help, I’ll apreciate that.

Error: Assert failed: This browser/engine doesn’t support WASM SIMD. Please use a modern version

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