c# - IIS Compilation Error -2146232576 AspNetInitializationExceptionModule

Question

I have a fairly simple C# WebAPI2 project that runs locally but after publishing to IIS on a remote machine (Windows Server 2012 R2 Standard) the web page displays the following (after setting customErrors to "Off"):

Server Error in '/' Application. Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: The compiler failed with error code -2146232576.

If I grab the detailed compiler output and run it on the IIS server, I get a smartscreen error message saying:

This app can't run on your PC. To find a version for your PC, check with the software publisher.

I'm guessing it's something to do with the compiler version but nothing has changed since it last published.

Any ideas?

Answer 1

Error:

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: The compiler failed with error code -2146232576.

Solution:

I faced with this problem after upgrade some NuGets and solved with below steps.

Step 1: Remove these NuGet packages from NuGet Package Console

PM> Uninstall-package Microsoft.CodeDom.Providers.DotNetCompilerPlatform
PM> Uninstall-package Microsoft.Net.Compilers

Step 2: Add these system.codedom lines before closing </system.data> tag in Web.config

    <system.codedom>
        <compilers>
            <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701"></compiler>
            <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=&quot;Web&quot; /optionInfer+"></compiler>
        </compilers>
    </system.codedom>

PS: After a while, we removed <system.codedom> completely, for fixed other errors.