# Upgrade 7.9.12 -\> 7.9.13 : Opc Connection faulted

**URL:** <https://forum.inductiveautomation.com/t/upgrade-7-9-12-7-9-13-opc-connection-faulted/30901>\
**Category:** Ignition\
**Tags:** ignition79\
**Created:** [December 23, 2019, 2:19pm UTC](https://forum.inductiveautomation.com/t/upgrade-7-9-12-7-9-13-opc-connection-faulted/30901 "2019-12-23T14:19:18Z")\
**Posts on this page:** 1\
**Showing post:** 18

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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 9, 2020, 11:42am UTC](https://forum.inductiveautomation.com/t/upgrade-7-9-12-7-9-13-opc-connection-faulted/30901/18 "2020-09-09T11:42:54Z")

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This configuration won’t work unless you get an update that fixed the nonce bug in the server.

No security with anonymous identity should work, or using security should work.

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_[View the full topic](https://forum.inductiveautomation.com/t/upgrade-7-9-12-7-9-13-opc-connection-faulted/30901)._