title: A transport-level error has occurred... (Existing connection closed by the server) Sql Server 2008
body: <p>I have a web application which is currently running on Windows XP operating system with SQL Server 2005 database and IIS 6.0. <br/><br/>
  Now, we are trying to upgrade it to IIS 7.0 on Windows Server 2008 and SQL server 2008 database.
  <br/><br/>
  When I run the application then it is throwing "A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)" randomly at different database calls. 
  <br/><br/>
  I have verified using <em>"sp_who"</em> that only one connection which I am using is opened.
  <br/><br/>
  Can anyone tell me, what could be the cause of this issue?</p>