OPC connection fault with opc expert

Hello,
I’m a beginning user, I have some fault when trying to connect OPC Expert as the opc server. For your information before was working properly when using opc expert v.8 but when upgrade to v.9 facing this issue.
Of course has been observe with team from OPC Expert and make trial connection with other opc client and it worked fine.

Our ignition gnition version: 8.1.16 (b2022040511)

Here our fault information
io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection timed out: no further information: /172.16.2.221:57888

UaException: status=Bad_ConnectionRejected, message=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection timed out: no further information: /172.16.2.221:57888
at org.eclipse.milo.opcua.stack.client.transport.uasc.ClientChannelFsm$ClientChannelActions.lambda$connect$0(ClientChannelFsm.java:129)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)
at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:571)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:550)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)
at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)
at io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:609)
at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:117)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:321)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:337)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection timed out: no further information: /172.16.2.221:57888
Caused by: java.net.ConnectException: Connection timed out: no further information
at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(Unknown Source)
at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:330)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at java.base/java.lang.Thread.run(Unknown Source)

8.1.16 (b2022040511)
Azul Systems, Inc. 11.0.14.1

Due to worked fine with other opc client, surely no issue with firewall/network .

Thanks

No, it's certainly a network/firewall issue or the server just simply isn't responding.

This error message is quite definitively saying that opening the TCP connection is timing out.

Here some feedback result from opcti expert

Mohammad, as per our session today, you now have OPC Expert running on your computer at 172.16.2.221. OPC Expert UA server is now waiting for Ignition to connect at the URL below

Also, it may be the case Ignition is simply refusing OPC Expert’s server certificate and you need to tell Ignition to allow it.

Randy Kondor, P.Eng.
Email: [randy.kondor@opcti.com]

No, it’s not getting far enough for that to be the issue. The underlying TCP connection is not successfully opening.

But why it was worked fine with other opc client

Here security policy configuration and also trying to set with "none" for both mode and policy but still not work.