# ApplicationUri of ignition OPC-UA server

**URL:** <https://forum.inductiveautomation.com/t/applicationuri-of-ignition-opc-ua-server/9360>\
**Category:** Ignition\
**Created:** [November 20, 2014, 3:54pm UTC](https://forum.inductiveautomation.com/t/applicationuri-of-ignition-opc-ua-server/9360 "2014-11-20T15:54:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [November 20, 2014, 3:54pm UTC](https://forum.inductiveautomation.com/t/applicationuri-of-ignition-opc-ua-server/9360/1 "2014-11-20T15:54:41Z")

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When I active the Expose Configured Tags in Ignition and connect with an OPC-UA client (UAExpert from Unified Automation) on a Gateway with multiple NIC, the ApplicationUri returned by Ignition is a bit strange.

I connect on the master gw (192.168.100.119) and the IP in the URI is the IP of the backup gw (192.168.100.118)  
When I connect to the backup GW the ip is the same (192.168.100.118) in the URI

Initialy I use the backup machine to create my project, and then load the backup on the master and set the redundancy.

Can we set this parameters in Ignition ?

 ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/7/72ae3c9d84b4238604b725131f3e219d3774bc7c.png)

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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:** [November 20, 2014, 3:56pm UTC](https://forum.inductiveautomation.com/t/applicationuri-of-ignition-opc-ua-server/9360/2 "2014-11-20T15:56:40Z")

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Regenerate the certificate on the machine with the incorrect application URI. You do this on the gateway under Ignition OPC-UA \> Certificates. Regenerate, apply, restart gateway.

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<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [November 20, 2014, 4:00pm UTC](https://forum.inductiveautomation.com/t/applicationuri-of-ignition-opc-ua-server/9360/3 "2014-11-20T16:00:49Z")

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![:thumb_left:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e26afb081ddde6df016df6ee49159cf56aaca688.gif ":thumb\_left:") Thanks a lot kevin, I regenerate it on master and backup gateway and restart OPC-UA module and it’s fine !