Kept being directed to HTTP Error 404.13 page despite configuration set in Web.Config

Question

Kept being directed to HTTP Error 404.13 page despite configuration set in Web.Config

184 Views Asked by beepbeepdoola At 13 April 2025 at 14:06

Error faced: HTTP Error 404.13 - Not Found/ The request filtering module is configured to deny a request that exceeds the request content length

Edit: Decided to rephrase and tidy my question.

I kept encountering this error whenever I am submitting files via FileUpload Control. I want to set the file size to 5MB, if selected files exceed 5MB, it will display a error message like (E.g. File exceeded file limit, please try again). Following are my codes.

**

WebPage1.aspx.cs

**

    protected void Button1_Click(object sender, EventArgs e)
    {
        string gen = "Pending";
        //This portion is for storing files in database
        FileInfo fi = new FileInfo(FileUpload1.FileName);
        byte[] documentContent = FileUpload1.FileBytes;
        string name = fi.Name;
        //string extn = fi.Extension;
        string filextn = Path.GetExtension(FileUpload1.FileName);

        //This portion is for storing files in folder
        string filepath = Path.GetExtension(FileUpload1.FileName);
        if (filepath.ToLower() != ".pdf" && filepath.ToLower() != ".png" && filepath.ToLower() != ".gif" && filepath.ToLower() != ".zip")
        {
            lblmessage.Text = "Only pdf, png and gif file are accepted";
        }
        else
        {
            //int filesize = FileUpload1.PostedFile.ContentLength;
            if (FileUpload1.PostedFile.ContentLength > 5242880)
            {
                //lblmessage.Text = "Maximum size (5MB) exceeded";
                Response.Redirect("Error.aspx");
            }
        }

Web.Config

From my understanding maxRequestLength is measured in KILOBYTES (KB)

  <httpRuntime targetFramework="4.7.2" maxRequestLength="5000"  />

And, maxAllowedContentLength is measured in BYTES

    <requestFiltering>
  <requestLimits maxAllowedContentLength="5242880" />
</requestFiltering>

Other things that I had tried

I configure the maxRequestLength in the configuration editor; still failed.

Credit: https://weblog.west-wind.com/posts/2016/apr/06/configuring-aspnet-and-iis-request-length-for-post-data https://hoststud.com/resources/how-to-increase-the-maximum-upload-file-size-in-iis.422/

Original Q&A

There are 1 best solutions below

**Sowmyadhar Gourishetty** · Accepted Answer

Try with the below configurations

Web.config:

    <configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.7.2"/>
    <httpRuntime targetFramework="4.7.2" maxRequestLength="1048576" />
  </system.web>
  <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="1073741824" />
      </requestFiltering>
    </security>
  </system.webServer>
  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs"
        type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, 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=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
    </compilers>
  </system.codedom>

</configuration>

WebForm1.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Sample_File_Upload.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
        </div>
        <asp:FileUpload ID="FileUpload1" runat="server" />
        <p>
            &nbsp;</p>
        <p>
            <asp:Button ID="UploadFile" runat="server" OnClick="UploadFile_Click" Text="Upload File" />
        </p>
        <asp:Label ID="message" runat="server"></asp:Label>
    </form>
</body>
</html>

WebForm1.aspx.cs

using System;

namespace Sample_File_Upload
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void UploadFile_Click(object sender, EventArgs e)
        {
            if(FileUpload1.PostedFile.ContentLength > 5242880)
            {
                message.Text = "Maximum size allowed is 5MB.";
            }
            else
            {
                message.Text = "File uploaded successfully";
            }
        }
    }
}

Kept being directed to HTTP Error 404.13 page despite configuration set in Web.Config

There are 1 best solutions below

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