# X509 certificate authentication for OPC UA clients

**URL:** <https://forum.inductiveautomation.com/t/x509-certificate-authentication-for-opc-ua-clients/77704>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [August 10, 2023, 4:13pm UTC](https://forum.inductiveautomation.com/t/x509-certificate-authentication-for-opc-ua-clients/77704 "2023-08-10T16:13:43Z")\
**Posts on this page:** 1\
**Showing post:** 5

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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:** [September 11, 2025, 1:42pm UTC](https://forum.inductiveautomation.com/t/x509-certificate-authentication-for-opc-ua-clients/77704/5 "2025-09-11T13:42:39Z")

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> [@\[IGN-9275\] OPC UA client X509 authentication](https://forum.inductiveautomation.com/t/ign-9275-opc-ua-client-x509-authentication/107512/3):
>
> This has been implemented and it's sitting in a long queue of work targeting 8.3.1.

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