# Ignition OPC-UA connection issue

**URL:** <https://forum.inductiveautomation.com/t/ignition-opc-ua-connection-issue/8157>\
**Category:** Ignition\
**Created:** [March 16, 2014, 6:41am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-connection-issue/8157 "2014-03-16T06:41:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mwasim](https://avatars.discourse-cdn.com/v4/letter/m/46a35a/32.png) [@mwasim](https://forum.inductiveautomation.com/u/mwasim)\
**Post date:** [March 16, 2014, 6:41am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-connection-issue/8157/1 "2014-03-16T06:41:52Z")

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I am using Ignition demo version 7.6.3 and most of the time I get this error message when I reset trial version.

“[color=#FF0000]Cannot browse connection “Ignition OPC-UA Server” when connection state is CONNECTING[/color]”  
[color=#FF0000]“Cannot browse connection “Ignition OPC-UA Server” when connection state is FAULTED”[/color]

so every time I need to restart gateway to fix this problem.

is this problem occur only in demo version or anyone experience this issue in licensed version also?

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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:** [March 16, 2014, 7:03pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-connection-issue/8157/2 "2014-03-16T19:03:39Z")

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We found and fixed a deadlock that could cause the UA client to get stuck during reconnect for the 7.6.5 release. If you could get a thread dump from the threads tab of the gateway console while it’s stuck we might be able to confirm that’s the problem.

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**Author:** ![mwasim](https://avatars.discourse-cdn.com/v4/letter/m/46a35a/32.png) [@mwasim](https://forum.inductiveautomation.com/u/mwasim)\
**Post date:** [March 18, 2014, 6:02am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-connection-issue/8157/3 "2014-03-18T06:02:32Z")

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Mr. Kaven,

Find the required thread dump file in attachment while the OPC-UA server got stuck.  
snapshot is also included for your reference.

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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:** [March 18, 2014, 2:54pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-connection-issue/8157/4 "2014-03-18T14:54:27Z")

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Can you also export your logs from the Console on the gateway while you’re unable to connect and attach those? It’s not the deadlock issue.