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See more: IIS7 ASP.NET4.0
When I tried to perform Load Testing my Asp.net MVC application, I test application with 30 concurrent users and Application pool stops automatically due to some Window Process Activation Service failed!!

Error :-->
System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
 
   at System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult)
 
   at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)

In Event Viewer WAS is giving below erros
1) application pool is being automaticall disabled due to a series of failures in the process service that application pool

2) A process service application pool "xyz" suffered a fatal communication error with Windows Process Activation Service. The data field contains the error number
Posted 10-Apr-13 23:06pm
Edited 11-Apr-13 2:20am
v3

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