I have this issue with a https website.
2019/05/14 21:28:48 INFO - neoload.LG_INFO: Starting LoadGenerator Version 6.9.0 ;build=20190307-5
2019/05/14 21:28:48 INFO - neoload.LG_INFO: OS Version: amd64 - Windows 10 - 10.0
2019/05/14 21:28:48 INFO - neoload.LG_INFO: JVM Version: Oracle Corporation - 1.8.0_112 - Java HotSpot(TM) 64-Bit Server VM - Xmx= 3803185152 bytes
2019/05/14 21:28:48 INFO - neoload.LG_INFO: Sockets Tuning information: MaxUserPort registry key not found;TcpTimedWaitDelay registry key not found;
2019/05/14 21:28:48 INFO - neoload.LG_INFO: ALPN boot status: present
2019/05/14 21:28:48 INFO - neoload.LG: Registered to Agent. Port 58450
2019/05/14 21:28:48 INFO - neoload.LG: Launching inbound connection listener on port:58524
2019/05/14 21:28:48 INFO - neoload.LG: Connection established with the Controller localhost:7100:58524
2019/05/14 21:28:48 INFO - neoload.LG_INFO: WAN Emulation: enabled
2019/05/14 21:28:49 INFO - neoload.LG: Connection established with the Controller localhost:7100:58524
2019/05/14 21:28:49 INFO - neoload.LG_INFO: Jetty ThreadPool configuration: MinThread=20; MaxThread=20000; IdleTimeoutMs=10000; QueueSize=6000
2019/05/14 21:28:50 ERROR - neoload.HttpClient: Exception during the send java.lang.RuntimeException: Could not generate DH keypair
at sun.security.ssl.Handshaker.checkThrown(Handshaker.java:1429)
at sun.security.ssl.SSLEngineImpl.checkTaskThrown(SSLEngineImpl.java:535)
at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:813)
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:781)
at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)
at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.fill(SslConnection.java:526)
at org.eclipse.jetty.io.NegotiatingClientConnection.fill(NegotiatingClientConnection.java:103)
at org.eclipse.jetty.io.NegotiatingClientConnection.onFillable(NegotiatingClientConnection.java:83)
at com.neotys.neoload.network.httpclient.jetty.alpn.NlALPNClientConnectionFactory$MyALPNClientConnection.onFillable(NlALPNClientConnectionFactory.java:97)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:265)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:197)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:265)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Could not generate DH keypair
at sun.security.ssl.DHCrypt.<init>(DHCrypt.java:142)
at sun.security.ssl.DHCrypt.<init>(DHCrypt.java:114)
at sun.security.ssl.ClientHandshaker.serverKeyExchange(ClientHandshaker.java:761)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:272)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979)
at sun.security.ssl.Handshaker$1.run(Handshaker.java:919)
at sun.security.ssl.Handshaker$1.run(Handshaker.java:916)
at java.security.AccessController.doPrivileged(Native Method)
at sun.security.ssl.Handshaker$DelegatedTask.run(Handshaker.java:1369)
at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.fill(SslConnection.java:630)
... 14 more
Caused by: java.security.InvalidAlgorithmParameterException: DH key size must be multiple of 64, and can only range from 512 to 2048 (inclusive). The specific key size 4096 is not supported
at com.sun.crypto.provider.DHKeyPairGenerator.initialize(DHKeyPairGenerator.java:128)
at java.security.KeyPairGenerator$Delegate.initialize(KeyPairGenerator.java:674)
at sun.security.ssl.DHCrypt.<init>(DHCrypt.java:128)
... 23 more