Could not load file or assembly Temporary ASP.NET Files

Question

I am developing a aps.net website in C# and I am using framework 4. After creating a new website project I tried to run the project. but I am getting the below error

Could not load file or assembly 'file:///C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\myfirst\159977c5\b9e740fc\App_global.asax.yfqtni9g.dll' or one of its dependencies. The system cannot find the file specified.

I already went through the below links [and all speaks about access to the folder], but it didn't help me :(

Could not load file or assembly 'file:///C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\ asp.net vs2010 ASP.NET corrupt assembly "Could not load file or assembly App_Web_*" http://web.archive.org/web/20101023213019/http://www.yetanotherdeveloper.com/post/2008/08/10/Could-not-load-file-or-assembly-App_Web.aspx

I checked and gave full access "Temporary ASP.NET Files" and to its sub folders and files for Users user-group.

Assembly Load Trace

WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

Stack Trace

[FileNotFoundException: Could not load file or assembly 'file:///C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\myfirst\4ff7194b\2da62764\App_global.asax.h-eem9xt.dll' or one of its dependencies. The system cannot find the file specified.]
System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +39
System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) +132
System.Reflection.Assembly.Load(AssemblyName assemblyRef, Evidence assemblySecurity) +28
System.CodeDom.Compiler.CompilerResults.get_CompiledAssembly() +93
System.Web.Compilation.BuildProvider.CreateBuildResult(CompilerResults results) +60
System.Web.Compilation.BuildProvider.GetBuildResult(CompilerResults results) +16
System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean isPrecompiledApp) +9118863
System.Web.Compilation.BuildManager.CompileGlobalAsax() +44
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +265

[HttpException (0x80004005): Could not load file or assembly 'file:///C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\myfirst\4ff7194b\2da62764\App_global.asax.h-eem9xt.dll' or one of its dependencies. The system cannot find the file specified.]
System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() +62
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +421
System.Web.Compilation.BuildManager.CallAppInitializeMethod() +31
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +691

[HttpException (0x80004005): Could not load file or assembly 'file:///C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\myfirst\4ff7194b\2da62764\App_global.asax.h-eem9xt.dll' or one of its dependencies. The system cannot find the file specified.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9090876
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +97
System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +258

Please give me a link if this is a repeated question

Thanks in adv.

I got the Log as follows

The operation was successful.
Bind result: hr = 0x0. The operation completed successfully.

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable  C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: User = John-PC\John
LOG: DisplayName = Microsoft.VisualStudio.ComponentModelHost, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
 (Fully-specified)
LOG: Appbase = file:///G:/WorkShop/HTML-CSS/ASP/MyFirst/
LOG: Initial PrivatePath = G:\WorkShop\HTML-CSS\ASP\MyFirst\bin
LOG: Dynamic Base = C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\myfirst\159977c5
LOG: Cache Base = C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\myfirst\159977c5
LOG: AppName = b9e740fc
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: G:\WorkShop\HTML-CSS\ASP\MyFirst\web.config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Found assembly by looking in the GAC.
LOG: Binding succeeds. Returns assembly from C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Microsoft.VisualStudio.ComponentModelHost\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.ComponentModelHost.dll.
LOG: Assembly is loaded in default load context.

I am not able to trace any error. Please help me....

Solution 1

I had simmilar problem after i tried to start performance tests. I removed assemblyPostProcessorType attribute in system.web > compilation element in web.config and it worked again.

 <system.web>
<compilation debug="false" targetFramework="4.5.1"  
            assemblyPostProcessorType="Microsoft.VisualStudio.Enterprise.Common.AspPerformanceInstrumenter, Microsoft.VisualStudio.Enterprise.AspNetHelper, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</system.web>

Solution 2

If you use Visual Studio Performance Tools then it is possible that Visual Studio left a key in your web.config appsettings section. It causes a 32 bit library to load, which won't work if your application is loading in 64 bit mode.

Check for the following and remove it:

<add key="Microsoft.VisualStudio.Enterprise.AspNetHelper.VsInstrLocation" value="C:\Program Files (x86)\Microsoft Visual Studio 11.0\Team Tools\Performance Tools\vsinstr.exe"/>

Solution 3

One of the solution is to delete those files from temporary asp.net folder that always works for me.

Solution 4

Remove the following lines from web.config will resolve your error.

<compilers>
      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
    </compilers>
  </system.codedom>

Solution 5

In my case while deploying an ASP.NET MVC project I renamed the DLL of one of the projects (the Assembly Name) in Visual Studio application properties.

Inside the Views folder of the ASP.NET MVC project sits a Web.config file. This Web.config file has the following razor section where we can list assemblies for nice IntelliSense support in Razor view files:

  <system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    <pages pageBaseType="System.Web.Mvc.WebViewPage">
      <namespaces>
        <add namespace="VizionLogs.LogRepository" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Optimization"/>
        <add namespace="System.Web.Routing" />
      </namespaces>
    </pages>
  </system.web.webPages.razor>

My problem: I renamed the project assembly from VizionLogs.LogRepository to ITVizion.VizionLogs.LogRepository and forgot to rename it in that Web.config file. This was causing that ASP.NET Temp folder error telling me it could not find VizionLogs.LogRepository. It took me some time to figure out what was going on and where the error was... :)

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Comments

[new_programmer]

HI Peter, i am not sure how to add the three registry you mentioned. Please help me . i am in the [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion] directory

[new_programmer]

I did it. righclick-> New->Dword.

[pero]

Do not forget to disable/delete fusion log afterwards. It will fill disk with log files and take a little on performance.

[new_programmer]

HI Sarrus, i put the above link in my question itself. I deleted everything in Temporary ASP.NET Files folder. Still i am getting the same error.

[new_programmer]

Hi Sumant, i deleted the Temp directory iteslf in the framework directory so now i am getting the same error from Temp file as follows : "Error 1 Could not load file or assembly 'file:///C:\Users\John\AppData\Local\Temp\Temporary ASP.NET Files\myfirst\159977c5\b9e740fc\App_global.asax.r8qranjn.dll‌​' or one of its dependencies. The system cannot find the file specified. "

[Hitesh]

where is the web.config file located?

[Ciaran Gallagher]

This worked for me when I closed down Visual Studio and stopped my IIS website also.

[D.B. Fred]

I did a rebuild and republish and that didn't fix this issue but clean then republish to the server did.

[Sotiris Zegiannis]

@CiaranGallagher your tip helped me. I just stopped and then started IIS and the error was gone.