# OPC UA Server Faulted Certificate problem

**URL:** <https://forum.inductiveautomation.com/t/opc-ua-server-faulted-certificate-problem/97908>\
**Category:** Ignition\
**Created:** [October 29, 2024, 3:59pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server-faulted-certificate-problem/97908 "2024-10-29T15:59:22Z")\
**Posts on this page:** 1\
**Showing post:** 3

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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:** [October 29, 2024, 4:05pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server-faulted-certificate-problem/97908/3 "2024-10-29T16:05:36Z")

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Try this advice from the original topic you posted this in: [OPCUA certificate expired - #2 by Kevin.Herron](https://forum.inductiveautomation.com/t/opcua-certificate-expired/40663/2)

> [@OPCUA certificate expired](https://forum.inductiveautomation.com/t/opcua-certificate-expired/40663/2):
>
> Stop the Ignition gateway then delete these files:
> 
> - `$IGNITION_INSTALL/data/opcua/client/security/certificates.pfx`
> - `$IGNITION_INSTALL/data/opcua/server/security/certificates.pfx`
> 
> Start the Ignition gateway and your certificates should be valid and your default OPC UA connection should be working.

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