# Ignition OPC UA Server	OPC UA	Unknown	FAULTED

**URL:** <https://forum.inductiveautomation.com/t/ignition-opc-ua-server-opc-ua-unknown-faulted/39464>\
**Category:** Ignition\
**Created:** [October 7, 2020, 3:58pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-opc-ua-unknown-faulted/39464 "2020-10-07T15:58:08Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![PRAMANJ](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pramanj/32/66935_2.png) [@PRAMANJ](https://forum.inductiveautomation.com/u/PRAMANJ)\
**Post date:** [October 7, 2020, 6:01pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-opc-ua-unknown-faulted/39464/13 "2020-10-07T18:01:29Z")

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Yes while testing external OPC UA client accessing Ignition OPC UA server, I had changed the security settings to 'None' and forgot to change back to 'None,Basic256Sha256'  
see post 24 onwards in [system.opc.readValue config error - #29 by prafull\_j](http://forum.inductiveautomation.com/t/system-opc-readvalue-config-error/34916/29)

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