# OPC-UA Connection broke after version upgade

**URL:** <https://forum.inductiveautomation.com/t/opc-ua-connection-broke-after-version-upgade/25360>\
**Category:** Ignition\
**Created:** [May 28, 2019, 3:02pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-broke-after-version-upgade/25360 "2019-05-28T15:02:01Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Peter.Dmitriev](https://avatars.discourse-cdn.com/v4/letter/p/7ea924/32.png) [@Peter.Dmitriev](https://forum.inductiveautomation.com/u/Peter.Dmitriev)\
**Post date:** [May 28, 2019, 3:02pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-broke-after-version-upgade/25360/1 "2019-05-28T15:02:01Z")

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Hello,

We’ve just performed Ignition upgrade from 7.8.2 to 7.9.10. We also upgraded Windows Server from 2008 to 2016 at the same time. Everything went smooth except for OPC-UA connection - server is no longer discoverable by other gateways. Here are error messages we are getting:

# ==== java.util.concurrent.ExecutionException: UaException: status=Bad\_ConnectionRejected, message=java.net.ConnectException: Connection refused: no further information: [ABCD.DOMAIN.com/10.XXX.XXX.XX:4096](http://ABCD.DOMAIN.com/10.XXX.XXX.XX:4096)

# org.eclipse.milo.opcua.stack.core.UaException: java.net.ConnectException: Connection refused: no further information: [ABCD.DOMAIN.com/10.XXX.XXX.XX:4096](http://ABCD.DOMAIN.com/10.XXX.XXX.XX:4096)

# java.net.ConnectException: Connection refused: no further information: [ABCD.DOMAIN.com/10.XXX.XXX.XX:4096](http://ABCD.DOMAIN.com/10.XXX.XXX.XX:4096)

Any help is appreciated.

Thank you,  
Peter.

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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:** [May 28, 2019, 3:09pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-broke-after-version-upgade/25360/2 "2019-05-28T15:09:09Z")

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Can you show us a screenshot of the UA Server configuration page in the gateway?

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<div class="post-metadata">

**Author:** ![Peter.Dmitriev](https://avatars.discourse-cdn.com/v4/letter/p/7ea924/32.png) [@Peter.Dmitriev](https://forum.inductiveautomation.com/u/Peter.Dmitriev)\
**Post date:** [May 28, 2019, 3:30pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-broke-after-version-upgade/25360/3 "2019-05-28T15:30:23Z")

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Kevin, here are OPC-UA server settings on the gateway:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/3/3ab0b489d1787be2dc3cdd7ae4a3183de26d75db.png)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/8/8947085630475be268a947c0c80a0a3a6b8515ff.png)

Thank you.

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<div class="post-metadata">

**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:** [May 28, 2019, 3:31pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-broke-after-version-upgade/25360/4 "2019-05-28T15:31:44Z")

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Try replacing whatever hostname you’ve got in the Endpoint Address with the IP address and then restart…

Either the server isn’t binding to the right address or there’s something else entirely going on, like a firewall preventing the inbound connections.

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<div class="post-metadata">

**Author:** ![Peter.Dmitriev](https://avatars.discourse-cdn.com/v4/letter/p/7ea924/32.png) [@Peter.Dmitriev](https://forum.inductiveautomation.com/u/Peter.Dmitriev)\
**Post date:** [May 28, 2019, 3:49pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-broke-after-version-upgade/25360/5 "2019-05-28T15:49:06Z")

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Changing hostname to IP and restarting gateway did the trick.

Thanks a lot, Kevin!