ASP.NET strange compilation error

user_452830 0
Viewed 141196

I don't know what's wrong with my machine, but it's a while that I'm getting the following strange error from ASP.NET (for all my applications).

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 -1073741502.


Show Detailed Compiler Output:


C:\Windows\SysWOW64\inetsrv> "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /t:library /utf8output /R:"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\75855fbd\1e953b27\assembly\dl3\2689d6b5\f0791420_961fcc01\wnvhtmlconvert.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_32\System.Web\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Web.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.Entity\v4.0_4.0.0.0__b77a5c561934e089\System.Web.Entity.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Web\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Web.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.IdentityModel\v4.0_4.0.0.0__b77a5c561934e089\System.IdentityModel.dll" /R:"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\75855fbd\1e953b27\assembly\dl3\d08c81cd\4d77c01f_961fcc01\AjaxControlToolkit.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Activation\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Activation.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.ApplicationServices\v4.0_4.0.0.0__31bf3856ad364e35\System.Web.ApplicationServices.dll" ......AND SO ON.....

Facts:

  1. Killing worker process fixes the problem temporarily
  2. I even reinstalled my .NET framework! It didn't work.
  3. Restarting IIS doesn't help

What can cause this problem?

iis asp.net .net
20 Answers

I have crawled through a lot of blog posts including a few Stack Overflow pots, and I already had everything in place what these posts suggested (see below) when I got this error.

  1. My app pool is running under ApplicationPoolIdentity
  2. Load user Profile was set to True in Process Model section
  3. IIS AppPool\DefaultAppPool has full permissions on temp ASP.NET files folder

Finally I found some clues in the below mentioned blog post. It looks like there is heap contention with the same user account. So I changed the app pool identity to LocalSystem, for the app which is failing with this error - and my app started working fine.

See blog post C# compiler or Visual Basic .Net compilers fail with error code -1073741502 when generating assemblies for your ASP.net site.

Note: LocalSystem account will not have much permissions. In my case my application does not need any special permissions. So I was fine. If your application needs special permissions try configuring a custom account.

user_65346350

The version of the Microsoft.Net.Compilers (3.0) used in my project was incompatible with the version of .NET installed on the server.

I downgraded the version to 2.1 and everything work fine now.

I guess it's related to the different versions of .Net framework (guessing .NET Core) installed on the server.

user_737530

This kind of errors appears "strange" because they are related to the .NET Framework dynamic source code generation and compilation feature, and, in my opinion, the various errors generated are not reported with all the information needed to understand the real root cause. IIS will report only a generic failure like "Configuration Error" or "Compilation Error", the command line of the dynamic compilation (with reference to temporary files created on-the-fly), and an error code.

Since the error is generic, by searching it on Internet (and in answers to this question), you'll find several different solutions that solved the issue for other people, but will not necessarily solve the issue for your specific case.

For the specific error reported in this question "-1073741502", the root cause appears to be a "DLL Initialization Failed" error during the compilation and from the following article it is likely to happen when the system is low on what is called Desktop Heap memory: https://blogs.msdn.microsoft.com/friis/2012/09/19/c-compiler-or-visual-basic-net-compilers-fail-with-error-code-1073741502-when-generating-assemblies-for-your-asp-net-site/ .

The same blog post suggests to change the app pool account to give more "Desktop Heap memory" or to increase it by changing Windows registry. And the solution to change the app pool account is the one accepted for this answer: https://stackoverflow.com/a/6929129/1996150

Since the "dynamic compilation" of ASP.NET pages appears to be not mandatory if all the code is already compiled within Visual Studio, in many cases similar errors can be solved by manually removing the element "<system.codedom>" from web.config file or removing the Microsoft.CodeDom.Providers.DotNetCompilerPlatform NuGet package (see https://stackoverflow.com/a/49903967/1996150).

user_19961500
Related