# UaException: status=Bad\_InternalError

**URL:** <https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929>\
**Category:** Ignition\
**Created:** [December 20, 2025, 6:49pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929 "2025-12-20T18:49:08Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![1rdac](https://avatars.discourse-cdn.com/v4/letter/1/5e9695/32.png) [@1rdac](https://forum.inductiveautomation.com/u/1rdac)\
**Post date:** [December 20, 2025, 6:49pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/1 "2025-12-20T18:49:08Z")

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Getting a OPC-UA connection fault. “UaException: status=Bad\_InternalError” Any feedback on this topic. The PC was rebooted and the problem start as soon as machine rebooted.

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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:** [December 20, 2025, 8:23pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/2 "2025-12-20T20:23:49Z")

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Can you tell us more? Ignition version? Upload log files? Is this a connection to the internal server or an external server?

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<div class="post-metadata">

**Author:** ![1rdac](https://avatars.discourse-cdn.com/v4/letter/1/5e9695/32.png) [@1rdac](https://forum.inductiveautomation.com/u/1rdac)\
**Post date:** [December 20, 2025, 9:24pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/3 "2025-12-20T21:24:57Z")

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8.0.5

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/5/4554750585568ca4ae2e562e76fbf28bc94feee0.png)

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<div class="post-metadata">

**Author:** ![1rdac](https://avatars.discourse-cdn.com/v4/letter/1/5e9695/32.png) [@1rdac](https://forum.inductiveautomation.com/u/1rdac)\
**Post date:** [December 20, 2025, 9:30pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/4 "2025-12-20T21:30:07Z")

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![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/9/b97c347efeaf726bc323b9776d8f096533ffc51f.png)

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<div class="post-metadata">

**Author:** ![1rdac](https://avatars.discourse-cdn.com/v4/letter/1/5e9695/32.png) [@1rdac](https://forum.inductiveautomation.com/u/1rdac)\
**Post date:** [December 20, 2025, 9:31pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/5 "2025-12-20T21:31:34Z")

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Attempted to delete and restart certificates. No luck

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<div class="post-metadata">

**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:** [December 20, 2025, 11:06pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/6 "2025-12-20T23:06:41Z")

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You'd need to stop the Ignition service and then delete these two files:

- `$IGNITION/data/opcua/client/security/certificates.pfx`
- `$IGNITION/data/opcua/server/security/certificates.pfx`

and then start it again.

You should also start planning on upgrading to a recent and supported version - 8.0.5 is quite old and the entire 8.0.x version line is unsupported. Make sure your license is eligible for upgrade first by contacting support or your sales rep.

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<div class="post-metadata">

**Author:** ![1rdac](https://avatars.discourse-cdn.com/v4/letter/1/5e9695/32.png) [@1rdac](https://forum.inductiveautomation.com/u/1rdac)\
**Post date:** [December 20, 2025, 11:49pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/7 "2025-12-20T23:49:24Z")

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We will plan on upgrading. What is the best method to stop services? Where will I find these files.

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<div class="post-metadata">

**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:** [December 21, 2025, 12:05am UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/8 "2025-12-21T00:05:18Z")

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`$IGNITION` is wherever you installed Ignition.

See [Installing and Upgrading Ignition | Ignition User Manual](https://docs.inductiveautomation.com/docs/8.1/getting-started/installing-and-upgrading#start-or-stop-ignition) for methods to start/stop the service.

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<div class="post-metadata">

**Author:** ![1rdac](https://avatars.discourse-cdn.com/v4/letter/1/5e9695/32.png) [@1rdac](https://forum.inductiveautomation.com/u/1rdac)\
**Post date:** [December 21, 2025, 1:00pm UTC](https://forum.inductiveautomation.com/t/uaexception-status-bad-internalerror/112929/9 "2025-12-21T13:00:58Z")

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Thanks Kevin, That fixed the issue.