WCF Service Throttling

Solution 1:

Or use this configuration in the client.

<system.net>
    <connectionManagement>
      <add maxconnection = "200" address ="*" />
    </connectionManagement>
  </system.net>

Here 200 is the limit from the client

I found a solution: there is a connection limit on ServicePointManager that was causing this problem. To remove this limit you just need to set

System.Net.ServicePointManager.DefaultConnectionLimit = X;

where the default limit is 2.