ASP.NET Version 4 Framework, External component has thrown an exception
<p>My web application under develoopment was running just ok until a few hours ago without any change from my side, I started receiving the error "External component has thrown an exception.". The error message is the same even if I open my other web applications which I have not touched for a long time. Any idea what causing this. See error below:</p>

<blockquote>
  <p>External component has thrown an exception.</p>
  
  <p>An unhandled exception was generated during the execution of the current web request. </p>
  
  <p>Information regarding the origin and location of the exception can be identified using the exception stack trace below. 
  [HttpException (0x80004005): External component has thrown an exception.]</p>
  
  <p>System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9036040</p>
  
  <p>System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +97</p>
  
  <p>System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +258</p>
</blockquote>
