How to increase the max upload file size in ASP.NET?

Question

I have a form that excepts a file upload in ASP.NET. I need to increase the max upload size to above the 4 MB default.

I have found in certain places referencing the

Answer 1

If you use ssl cert your ssl pipeline F5 settings configure.Important.

Answer 2

Max file size can be restricted to a single MVC Controller or even to an Action.
web.config <location> tag can be used for this:

<location path="YourAreaName/YourControllerName>/YourActionName>">
  <system.web>
    <!-- 15MB maxRequestLength for asp.net, in KB 15360 -->
    <httpRuntime maxRequestLength="15360" />
  </system.web>
  <system.webServer>
    <security>
      <requestFiltering>
        <!-- 15MB maxAllowedContentLength, for IIS, in bytes 15728640 -->
        <requestLimits maxAllowedContentLength="15728640" />
      </requestFiltering>
    </security>
  </system.webServer>
</location>

Or you can add these entries in area's own web.config.

Answer 3

You can write that block of code in your application web.config file.

<httpRuntime maxRequestLength="2048576000" />
<sessionState timeout="3600"  />

By writing that code you can upload a larger file than now