Net framework error 404

Error 404 problems include computer crashes, freezes, and possible virus infection. Learn how to fix these .NET Framework runtime errors quickly and easily!
Icon Ex Error Number: Error 404
Error Name: .NET Framework Error 404
Error Description: HTTP 404 Error.
Developer: Microsoft Corporation
Software: .NET Framework
Applies to: Windows XP, Vista, 7, 8, 10, 11

Description of .NET Framework Error 404

Commonly, PC professionals refer to .NET Framework Error 404 as a type of «runtime error». Programmers like Microsoft Corporation endeavor to produce software that is free from these glitches until it is publicly released. Errors such as error 404 sometimes get dropped from reporting, leaving the issue remaining unresolved in the software.

«HTTP 404 Error.» might occur to .NET Framework users even through normal use of the application. In this way, end-users alert vendors about the presence of error 404 problems by providing information to developer. They will then patch the defective areas of code and make an update available for download. As a result, the developer can use update packages for .NET Framework accessible from their website (or automatic download) to resolve these error 404 problems and other errors.

How Runtime Error 404 Triggers, and What Is It?

.NET Framework Error 404 can most often occur when .NET Framework is being loaded up. The three common reasons why runtime errors like error 404 pop-up:

Error 404 Crash — error 404 locks up any input and it can make the machine crash. This usually happens when .NET Framework can’t handle the provided input, or when it doesn’t know what to output.

.NET Framework Error 404 Memory Leak — When a .NET Framework memory leak happens, it will result in the operating system running sluggish due to a lack of system resources. Possible sparks include a deallocation failure that happened in a non-C++ program, when corrupted assembly code improperly executes an infinite loop.

Error 404 Logic Error — A logic error happens when .NET Framework produces wrong output from the right input. Microsoft Corporation’s faulty source code can lead to these issues with input handling.

Commonly, corrupt or missing .NET Framework Error 404 files cause these Microsoft Corporation errors, and are sometimes attributed to a current or past malware infection affecting .NET Framework. Downloading and replacing your Microsoft Corporation file can fix the problem in most cases. As a supplemental troubleshooting step, we highly recommend cleaning up any invalid file path and Microsoft Corporation file extension references that could contribute to creating these .NET Framework Error 404 error messages.

Common .NET Framework Error 404 Error Messages

These .NET Framework Error 404-related .NET Framework Troubles Include:

  • «.NET Framework Error 404 Program Error.»
  • «.NET Framework Error 404 not valid.»
  • «.NET Framework Error 404 encountered a problem and will close.»
  • «Sorry, we can’t find .NET Framework Error 404.»
  • «.NET Framework Error 404 can’t be found.»
  • «Problem starting application: .NET Framework Error 404.»
  • «.NET Framework Error 404 is not running.»
  • «.NET Framework Error 404 failed.»
  • «Software Path Fault: .NET Framework Error 404.»

Usually .NET Framework Error 404 errors with .NET Framework happen during startup or shutdown, while .NET Framework Error 404 related programs are running, or rarely during the OS update sequence. Notating when .NET Framework Error 404 errors occur is paramount in finding the cause of the .NET Framework problems and reporting them to Microsoft Corporation for help.

Creators of .NET Framework Error 404 Difficulties

Malware infestation, invalid .NET Framework registry entries, or missing / corrupt .NET Framework Error 404 files can create these .NET Framework Error 404 errors.

Especially, .NET Framework Error 404 errors stem from:

  • Invalid (corrupt) .NET Framework Error 404 registry entry.
  • .NET Framework Error 404 file corrupted from virus infection.
  • Malicious deletion (or mistaken) of .NET Framework Error 404 by another application (not .NET Framework).
  • A different application in conflict with .NET Framework Error 404, or other shared references.
  • .NET Framework / .NET Framework Error 404 corrupt from incomplete download or install.

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I have a project which I have upgraded to .Net 4.0, but when I try to access it, I retrieve the following error:

HTTP Error 404.2 - Not Found
The page you requested could not be displayed because of the settings for the list of ISAPI and CGI restrictions on web server.
ErrorCode: 0x800704ec
Handler PageHandlerFactory-ISAPI-4.0_32bit

Do I need to do something extra to the IIS 7 or APP pool, when converting an existing site to a .NET 4.0 site?

Also if I look at ISAPI both 32bit and 64bit of the .Net 4.0 is installed.

asked Apr 19, 2010 at 6:39

Dofs's user avatar

DofsDofs

17k27 gold badges74 silver badges122 bronze badges

In IIS, enable .NET 4.

Here is image:
enter image description here

Guru's user avatar

Guru

21.4k10 gold badges62 silver badges101 bronze badges

answered Apr 19, 2010 at 6:45

Raj Kaimal's user avatar

Raj KaimalRaj Kaimal

8,28427 silver badges18 bronze badges

6

I take it you’re running on IIS6 right now..

Open the IIS manager, and go to the Web Service Extensions area.. You’ll be able to enable .NET 4 in there.. All new extensions are disabled by default :)

If you’re running on IIS7, .NET might not have registered in IIS.. Then open up an admin command prompt and navigate to the .NET 4 framework folder (C:WindowsMicrosoft.NETFrameworkv4.{version}). If you’re on a 64 bit machine go to the Framework64 folder instead of the Framework folder.
Then run aspnet_regiis -i in there

answered Apr 19, 2010 at 6:44

Artiom Chilaru's user avatar

Artiom ChilaruArtiom Chilaru

11.7k4 gold badges41 silver badges52 bronze badges

3

I had this same issue. Strangely, for me it would run in integrated mode but not in classic mode for .NET 4. After enabling the .NET 4 extensions via the Isapi and Cgi restrictions section in IIS 7, it then began working in both modes. The Isapi and Cgi restrictions section is located at the server level node in IIS manager. This option should not be confused with the Isapi Filters section at the site level.

answered Jul 19, 2010 at 14:06

james2code's user avatar

james2codejames2code

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Hi, 

I have been receiving this error that pops up every single time i turn on my laptop. It goes away when i click » Close «, » Continue » or the » X » button but i’m worried that there’s something wrong since it has been quite some time. I’m really clueless
about all these errors and stuff.

The Error : 

» Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.

The remote server returned and error: (404) Not Found. «

There was a drop-down box and these are the details :

See the end of this message for details on invoking 

just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************

System.Net.WebException: The remote server returned an error: (404) Not Found.

   at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request)

   at System.Net.WebClient.DownloadData(Uri address)

   at System.Net.WebClient.DownloadData(String address)

   at ajStubs.Form1.Form1_Load(Object sender, EventArgs e)

   at System.EventHandler.Invoke(Object sender, EventArgs e)

   at System.Windows.Forms.Form.OnLoad(EventArgs e)

   at System.Windows.Forms.Form.OnCreateControl()

   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)

   at System.Windows.Forms.Control.CreateControl()

   at System.Windows.Forms.Control.WmShowWindow(Message& m)

   at System.Windows.Forms.Control.WndProc(Message& m)

   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

   at System.Windows.Forms.ContainerControl.WndProc(Message& m)

   at System.Windows.Forms.Form.WmShowWindow(Message& m)

   at System.Windows.Forms.Form.WndProc(Message& m)

   at ajStubs.Form1.WndProc(Message& m)

   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************

mscorlib

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4214 (VistaSP2GDR.050727-4200)

    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

—————————————-

ajStubs

    Assembly Version: 1.0.0.0

    Win32 Version: 1.0.0.0

    CodeBase: file:///C:/Users/Angs/AppData/Roaming/system/scvhost.exe

—————————————-

Microsoft.VisualBasic

    Assembly Version: 8.0.0.0

    Win32 Version: 8.0.50727.4016 (NetFxQFE.050727-4000)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll

—————————————-

System

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4212 (VistaSP2GDR.050727-4200)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll

—————————————-

System.Windows.Forms

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4214 (VistaSP2GDR.050727-4200)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

—————————————-

System.Drawing

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

—————————————-

System.Runtime.Remoting

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll

—————————————-

System.Configuration

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll

—————————————-

System.Xml

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll

—————————————-

************** JIT Debugging **************

To enable just-in-time (JIT) debugging, the .config file for this

application or computer (machine.config) must have the

jitDebugging value set in the system.windows.forms section.

The application must also be compiled with debugging

enabled.

For example:

<configuration>

    <system.windows.forms jitDebugging=»true» />

</configuration>

When JIT debugging is enabled, any unhandled exception

will be sent to the JIT debugger registered on the computer

rather than be handled by this dialog box.

Источник

Hello community.

For what we’ve seen. Maybe there’s a problem with .NET framework version installed on OS for web applications hosted on IIS 8.5.

On OS that it has installed the .NET 4.5 version the views are running without any problem. But for OS that has installed the .NET 4.6 version, there’re views that aren’t exists for IIS, throwing a 404 error not found. The views that aren’t working represents
a 2% aprox. of existant views of the system that we’re developing.

There’s some sort of option to enable for full compatibility? For what I understand .NET 4.5 and .NET 4.6 has high native compatibility and it shouldn’t be problems of this level.

Note: Projects are running with 4.5 .NET Framework version

Registry screenshoot for .NET 4.5 Framework version.

Registry screenshoot for .NET 4.6 Framework version.

.NET 4.6 version exception on runtime ( fiddler information )

[HttpException]: The controller for path '/xxx/xxx/xxx/xxx' was not found or does not implement IController.

   at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType)

   at System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName)

   at System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory)

   at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state)

   at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state)

   at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData)

   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Thanks for the help.

Best regards,

Jose Luis Guerra Infante.

  • Изменено

    18 октября 2016 г. 16:46
    Add new specific information

  • Перемещено
    Wendy ZangMicrosoft contingent staff
    31 октября 2016 г. 2:59
    MVC related

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Windows 10: Microsoft .net framework the remote server returned an error (404) not found

Discus and support Microsoft .net framework the remote server returned an error (404) not found in Windows 10 BSOD Crashes and Debugging to solve the problem; Hello guys. Please help me. I cant fix it. If you can… please teamview help me :(

[ATTACH]…
Discussion in ‘Windows 10 BSOD Crashes and Debugging’ started by bache1, Jul 4, 2018.

  1. Microsoft .net framework the remote server returned an error (404) not found

    Hello guys. Please help me. I cant fix it. If you can… please teamview help me Microsoft .net framework the remote server returned an error (404) not found :(

    Microsoft .net framework the remote server returned an error (404) not found c27066b4-0f9c-4990-9282-5d7af508174a?upload=true.png

    :)

  2. Microsoft .NetFramwork error !

    Sir. This is me. Yesterday it said Microsoft .net framework the remote server returned an error (404) not found .

    And now it said microsoft net framework unhandled exception has occurred in your application an exception occurred during a webclient request. Microsoft .net framework the remote server returned an error (404) not found :((

  3. Microsoft .Net Framework

    Basically, to sum up what I can tell:
    -The application(s) that crashed use .NET Framework 2.0 or 3.5.
    -First error is it getting nothing when it expected something (not very telling).
    -Second error occured in «System.Data.SQLite» which is not .NET Framework. I repeat, not .NET Framework.
    -SQLite is is a GNU licenced, free to use library.
    -Any .NET-compiled service or process could be causing the error. If you watch the Task Manager, you might be able to tell which process closes after you click on «Quit.»

    I suggest you search your computer for sqlite*.dll. Whatever programs it is found in close proximity to are most likely the culprits for the crashes.

  4. Microsoft .net framework the remote server returned an error (404) not found

    Microsoft .NET Framework, Unhandled exception

    Hi,

    Welcome to Microsoft Community.

    I suggest you to un-check and recheck .Net framework 3.5 and .Net framework 4.6 advance series from Windows features.

    Try the following steps:

    • Press Windows + R keys to open Run command.
    • Type Appwiz.cpl and select «turn Windows feature on or off» from the left
    • Uncheck .Net framework 3.5 and .Net framework 4.6 advance series.
    • Restart the computer
    • Repeat step 1 and 2 and check .Net framework 3.5 and .Net framework 4.6 advance series.
    • Restart the computer.

    Regards,

Thema:

Microsoft .net framework the remote server returned an error (404) not found

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