# Ignition OPC-UA Problem

**URL:** <https://forum.inductiveautomation.com/t/ignition-opc-ua-problem/43011>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [February 4, 2021, 1:55pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-problem/43011 "2021-02-04T13:55:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![hydradenlon](https://avatars.discourse-cdn.com/v4/letter/h/c37758/32.png) [@hydradenlon](https://forum.inductiveautomation.com/u/hydradenlon)\
**Post date:** [February 4, 2021, 1:55pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-problem/43011/1 "2021-02-04T13:55:23Z")

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![problem1](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/0/50ba09f09e35a2009f89a5148d54e3b93f20b953.png) ![problem2](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/7/572176e8524f5bdf1168b8201955a8a364defe5b.png)

First of all I just new here and don’t know much about Ignition so… your advice would help me a lot  
I use newest version of Ignition (8.1)  
I try to create first OPC connection (OPC UA) but it got a problem

THANK YOU SO MUCH

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 4, 2021, 2:10pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-problem/43011/2 "2021-02-04T14:10:20Z")

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“Connection Refused”

That’s either a wrong port number, wrong IP address, or a firewall blocking traffic. Not an Ignition problem at all.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [February 4, 2021, 2:17pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-problem/43011/3 "2021-02-04T14:17:19Z")

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Are you trying to make another connection to Ignition’s own OPC UA server or to some other server?

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**Author:** ![Nick\_Niculita](https://avatars.discourse-cdn.com/v4/letter/n/848f3c/32.png) [@Nick\_Niculita](https://forum.inductiveautomation.com/u/Nick_Niculita)\
**Post date:** [April 15, 2022, 11:38am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-problem/43011/4 "2022-04-15T11:38:55Z")

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Same issue Ignition OPC UA Server FAULTY in WIN7, no issue in Win10.  
This happened after a clean install and from the beginning the Ignition OPC UA server was faulty.  
Tried with Firewall ON and OFF…no difference.

Log:  
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: localhost/127.0.0.1:62541  
INFO | jvm 1 | 2022/04/15 21:09:56 | Caused by: java.net.ConnectException: Connection refused: no further information  
INFO | jvm 1 | 2022/04/15 21:09:56 | at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(Unknown Source)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:330)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)  
INFO | jvm 1 | 2022/04/15 21:09:56 | at java.base/java.lang.Thread.run(Unknown Source)  
INFO | jvm 1 | 2022/04/15 21:10:30 | I [IgnitionGateway] [11:10:30]: Reloading JDBC classloader.  
INFO | jvm 1 | 2022/04/15 21:11:37 | I [P.InternalDatabase] [11:11:37]: Creating auto-backup of internal database “config.idb”…  
INFO | jvm 1 | 2022/04/15 21:11:37 | I [P.InternalDatabase] [11:11:37]: Created auto-backup of internal database “config.idb” in 53 ms

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<div class="post-metadata">

**Author:** ![Nick\_Niculita](https://avatars.discourse-cdn.com/v4/letter/n/848f3c/32.png) [@Nick\_Niculita](https://forum.inductiveautomation.com/u/Nick_Niculita)\
**Post date:** [April 15, 2022, 11:39am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-problem/43011/5 "2022-04-15T11:39:31Z")

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![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/7/d765cfdd42bcf2f0389f42e8829f03939d5c41c7.png)