# Issue connecting to third party OPC-UA server

**URL:** <https://forum.inductiveautomation.com/t/issue-connecting-to-third-party-opc-ua-server/107293>\
**Category:** Ignition\
**Created:** [June 11, 2025, 7:30pm UTC](https://forum.inductiveautomation.com/t/issue-connecting-to-third-party-opc-ua-server/107293 "2025-06-11T19:30:33Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Alfred\_Harris](https://avatars.discourse-cdn.com/v4/letter/a/a5b964/32.png) [@Alfred\_Harris](https://forum.inductiveautomation.com/u/Alfred_Harris)\
**Post date:** [June 11, 2025, 7:30pm UTC](https://forum.inductiveautomation.com/t/issue-connecting-to-third-party-opc-ua-server/107293/1 "2025-06-11T19:30:33Z")

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![Ignition screenshot](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/4/84bdb0862c900913189533258dcf52b294ed90d9.png)

I have a third party opc connection in ignition that is showing faulted. Initially the igniton opc UA certificate had expired so I regenerated it in igntion and then imported to the third party server. But I can't get it to connect now.

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**Author:** ![ryan.white](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ryan.white/32/73193_2.png) [@ryan.white](https://forum.inductiveautomation.com/u/ryan.white)\
**Post date:** [June 11, 2025, 7:41pm UTC](https://forum.inductiveautomation.com/t/issue-connecting-to-third-party-opc-ua-server/107293/2 "2025-06-11T19:41:28Z")

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After regenerating the certificate, did you restart the Ignition OPC server or Ignition itself?

Also, post stack traces as preformatted text, see [Wiki - how to post code on this forum](https://forum.inductiveautomation.com/t/wiki-how-to-post-code-on-this-forum/77831). You can edit your post by clicking the pencil icon in the lower right.

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**Author:** ![Alfred\_Harris](https://avatars.discourse-cdn.com/v4/letter/a/a5b964/32.png) [@Alfred\_Harris](https://forum.inductiveautomation.com/u/Alfred_Harris)\
**Post date:** [June 11, 2025, 7:46pm UTC](https://forum.inductiveautomation.com/t/issue-connecting-to-third-party-opc-ua-server/107293/4 "2025-06-11T19:46:26Z")

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I restarted the third party opc server but not Ignition itself.

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**Author:** ![ryan.white](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ryan.white/32/73193_2.png) [@ryan.white](https://forum.inductiveautomation.com/u/ryan.white)\
**Post date:** [June 11, 2025, 8:00pm UTC](https://forum.inductiveautomation.com/t/issue-connecting-to-third-party-opc-ua-server/107293/5 "2025-06-11T20:00:25Z")

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Try restarting Ignition OPC server or Ignition as a whole.