# OPC-UA Client connection issue

**URL:** <https://forum.inductiveautomation.com/t/opc-ua-client-connection-issue/29744>\
**Category:** Ignition\
**Created:** [November 7, 2019, 3:25am UTC](https://forum.inductiveautomation.com/t/opc-ua-client-connection-issue/29744 "2019-11-07T03:25:51Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ace5715](https://avatars.discourse-cdn.com/v4/letter/a/76d3ee/32.png) [@ace5715](https://forum.inductiveautomation.com/u/ace5715)\
**Post date:** [November 7, 2019, 3:25am UTC](https://forum.inductiveautomation.com/t/opc-ua-client-connection-issue/29744/1 "2019-11-07T03:25:51Z")

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Creating an OPC-UA client connection to a Siemens HMI OPC-UA server in version 8.0.4 and 8.05 gives me the following error and a faulted connection.

![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/b/bca053ff718dd6b1a0b2ce21322547384b3ba08a.png)

If I roll back my gateway to 8.0.3 the same connection connects to the OPC-UA server successfully. Interestingly if I setup a connection in 8.0.3 then upgrade the gateway to 8.0.5 the OPC-UA connection will stay successfully connected.

Any thoughts or anyone else had the same issue.

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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 7, 2019, 3:56am UTC](https://forum.inductiveautomation.com/t/opc-ua-client-connection-issue/29744/2 "2019-11-07T03:56:36Z")

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On the working connection, if you enter the endpoint discovery flow and then click the “Skip to advanced configuration” link you should be shown the current endpoint URL and discovery URL.

I think you’ll find when setting up a new connection you don’t end up with these same values. There seems to have been some regressions introduced into the discovery wizard and we’ve fixed a bunch of things that will land in a nightly release (tonight’s, I think?) soon.

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<div class="post-metadata">

**Author:** ![ace5715](https://avatars.discourse-cdn.com/v4/letter/a/76d3ee/32.png) [@ace5715](https://forum.inductiveautomation.com/u/ace5715)\
**Post date:** [November 7, 2019, 4:46am UTC](https://forum.inductiveautomation.com/t/opc-ua-client-connection-issue/29744/3 "2019-11-07T04:46:25Z")

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Thanks for the prompt response.  
I’ll check it out and post the results

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<div class="post-metadata">

**Author:** ![ace5715](https://avatars.discourse-cdn.com/v4/letter/a/76d3ee/32.png) [@ace5715](https://forum.inductiveautomation.com/u/ace5715)\
**Post date:** [January 9, 2020, 11:13pm UTC](https://forum.inductiveautomation.com/t/opc-ua-client-connection-issue/29744/4 "2020-01-09T23:13:37Z")

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Hey Kevin,  
Finally got around to testing the bug fix for the OPC-UA issue in version 8.0.7 and it appears that it is fixed in this version (could of been fixed in 8.0.6 but haven’t checked that version).

Cheers for the help.