title: HTTP Error 400 : The request verb is invalid in IIS 8.5
body: <p>I have hosted ASP NET 4.5 application in Windows Server 2012 R2 (IIS Version 8.5.9600.16384). But once in a while I am getting an error like Bad Request - Invalid Verb HTTP Error 400. The request verb is invalid while going from one page to another. There is no special sequence or specific page where I am getting this error.</p>
  
  <p>httperr log file shows me an error like </p>
  
  <pre><code>2015-01-21 04:48:18 MyIP 55452 ServerIP 80 - - - 400 - Verb -
  2015-01-21 04:48:20 MYIP 55454 SerevrIP 80 - - - 400 - Verb -
  </code></pre>
  
  <p>I checked this post <a href="http://support.microsoft.com/kb/828726" rel="nofollow noreferrer">http://support.microsoft.com/kb/828726</a> but here it is applicable for Microsoft Internet Information Services (IIS) 6.0. Can I do this hotfix for iis 8.5 as well. I have searched about this issue over the internet but could not get substantial information. So, can anyone help me resolve this issue.</p>
  
  <p>Using Fiddler I got the Raw Data of the request as </p>
  
  <pre><code>POST http://example.com/Project.aspx?prj=5566 HTTP/1.1
  Host: example.com
  Connection: keep-alive
  Content-Length: 30634
  Cache-Control: max-age=0
  Authorization: Negotiate 
  Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
  Origin: http://example.com
  User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.99 Safari/537.36
  Content-Type: application/x-www-form-urlencoded
  Referer: http://example.com/Project.aspx?prj=5566
  Accept-Encoding: gzip, deflate
  Accept-Language: en-US,en;q=0.8
  Cookie: ASP.NET_SessionId=4oymd5odmcaluiuzc24tbx22; _gat=1; _ga=GA1.2.1888408676.1418017144
  </code></pre>
  
  <p>The Request Filtering Setting of Windows Server 2012 R2 is</p>
  
  <p><img src="https://i.stack.imgur.com/NuqsO.jpg" alt="enter image description here"></p>
  
  <p>Any help would be appreciated.</p>