title: Http Status Code 413
body: <p>I have a page with normal Ajax Update panel. There is a submit button which sends the user selection to server. If the user waits for a minute or two, the response from the server is HTTP 413 ( request entity is too large) from server. This only happens when I try to resubmit it after waiting for a minute or two. If a land of the page and submit the form, the server is able to process it.</p>
  
  <p>I have modified the uploadReadAheadSize(as mentioned <a href="http://forums.asp.net/t/1574804.aspx" rel="nofollow">http://forums.asp.net/t/1574804.aspx</a>) and set it to 200,000,000 - still the problem persists</p>
  
  <p>Http Request</p>
  
  <pre><code>POST https://server/somepage HTTP/1.1
  Accept: */*
  Accept-Language: en-US,zh-Hans;q=0.9,zh-CN;q=0.8,zh-SG;q=0.7,zh-Hant;q=0.6,zh-HK;q=0.4,zh-MO;q=0.3,zh-TW;q=0.2,zh;q=0.1
  Referer: https://server/somepage
  x-requested-with: XMLHttpRequest
  x-microsoftajax: Delta=true
  Content-Type: application/x-www-form-urlencoded; charset=utf-8
  Cache-Control: no-cache
  Accept-Encoding: gzip, deflate
  User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; InfoPath.3; .NET4.0E)
  Host: some-server
  Content-Length: 86124
  Connection: Keep-Alive
  Form-Data...........
  </code></pre>
  
  <p>The request is over SSL. </p>
  
  <p>I also tried to edit httpruntime configuration in web config</p>
  
  <pre><code>&lt;httpRuntime executionTimeout="3600" maxRequestLength="1902400" /&gt;
  </code></pre>