asp.net ssrs Maximum request length exceeded.



maximum request length exceeded. web api (12)

I am getting the error Maximum request length exceeded when I am trying to upload a video in my site.

How do I fix this?


If you can't update configuration files but control in full the code that handles uploaded files use HttpContext.Current.Request.GetBufferlessInputStream(true).

The true value for disableMaxRequestLength parameter tells the framework to ignore configured request limits.

For detailed description visit https://msdn.microsoft.com/en-us/library/hh195568(v=vs.110).aspx


If you are using IIS for hosting your application, then the default upload file size if 4MB. To increase it, please use this below section in your web.config -

<configuration>
    <system.web>
        <httpRuntime maxRequestLength="1048576" />
    </system.web>
</configuration>

For IIS7 and above, you also need to add the lines below:

 <system.webServer>
   <security>
      <requestFiltering>
         <requestLimits maxAllowedContentLength="1073741824" />
      </requestFiltering>
   </security>
 </system.webServer>

Note:

  • maxRequestLength is measured in kilobytes
  • maxAllowedContentLength is measured in bytes

which is why the values differ in this config example. (Both are equivalent to 1 GB)


And just in case someone's looking for a way to handle this exception and show a meaningful explanation to the user (something like "You're uploading a file that is too big"):

//Global.asax
private void Application_Error(object sender, EventArgs e)
{
    var ex = Server.GetLastError();
    var httpException = ex as HttpException ?? ex.InnerException as HttpException;
    if(httpException == null) return;

    if(httpException.WebEventCode == WebEventCodes.RuntimeErrorPostTooLarge)
    {
        //handle the error
        Response.Write("Too big a file, dude"); //for example
    }
}

(ASP.NET 4 or later required)


I don't think it's been mentioned here, but to get this working, I had to supply both of these values in the web.config:

In system.web

<httpRuntime maxRequestLength="1048576" executionTimeout="3600" />

And in system.webServer

<security>
    <requestFiltering>
        <requestLimits maxAllowedContentLength="1073741824" />
    </requestFiltering>
</security>

IMPORTANT : Both of these values must match. In this case, my max upload is 1024 megabytes.

maxRequestLength has 1048576 KILOBYTES, and maxAllowedContentLength has 1073741824 BYTES.

I know it's obvious, but it's easy to overlook.


I was tripped up by the fact that our web.config file has multiple system.web sections: it worked when I added < httpRuntime maxRequestLength="1048576" /> to the system.web section that at the configuration level.


I can add to config web uncompiled

<system.web> 
  <httpRuntime maxRequestLength="1024" executionTimeout="3600" /> 
  <compilation debug="true"/> 
</system.web> 
<security> 
  <requestFiltering> 
    <requestLimits maxAllowedContentLength="1048576"/> 
  </requestFiltering> 
</security>

To summarize all the answers in a single place:

<system.web>
  <httpRuntime targetFramework="4.5.2" maxRequestLength="1048576"/>
</system.web>

<system.webServer>
  <security>
    <requestFiltering>
      <requestLimits maxAllowedContentLength="1073741824" />
    </requestFiltering>
  </security>
</system.webServer>

Rules:

  • maxRequestLength (expressed in kb) value must match maxAllowedContentLength (expressed in bytes).
  • most of the time your system.web section may already contains an "httpRuntime". set your targetFramework to the version of your .net used.

Notes:

  • default value for maxRequestLength is 4096 (4mb). max value is 2,147,483,647
  • default value for maxAllowedContentLength is 30,000,000 (around 30mb). max value is 4,294,967,295

more info MSDN


I had to edit the C:\Windows\System32\inetsrv\config\applicationHost.config file and add <requestLimits maxAllowedContentLength="1073741824" /> to the end of the...

<configuration>
    <system.webServer>
        <security>
            <requestFiltering>

section.

As per This Microsoft Support Article


It bothered me for days too. I modified the Web.config file but it didn't work. It turned out that there are two Web.config file in my project, and I should modified the one in the ROOT directory, not the others. Hope this would be helpful.


It may be worth noting that you may want to limit this change to the URL you expect to be used for the upload rather then your entire site.

<location path="Documents/Upload">
  <system.web>
    <!-- 50MB in kilobytes, default is 4096 or 4MB-->
    <httpRuntime maxRequestLength="51200" />
  </system.web>
  <system.webServer>
    <security>
      <requestFiltering>
        <!-- 50MB in bytes, default is 30000000 or approx. 28.6102 Mb-->
        <requestLimits maxAllowedContentLength="52428800" /> 
      </requestFiltering>
    </security>
  </system.webServer>
</location>

There's an element in web.config to configure the max size of the uploaded file:

<httpRuntime 
    maxRequestLength="1048576"
  />

maxRequestLength (length in KB) Here as ex. I took 1024 (1MB) maxAllowedContentLength (length in Bytes) should be same as your maxRequestLength (1048576 bytes = 1MB).

<system.web>
   <httpRuntime maxRequestLength="1024" executionTimeout="3600" />
</system.web>

<system.webServer>
   <security>
      <requestFiltering>
          <requestLimits maxAllowedContentLength="1048576"/>
      </requestFiltering>
   </security>
</system.webServer>




file-upload