# Upgraded 8.0.5 -\> 8.0.7 OPC no longer connects

**URL:** <https://forum.inductiveautomation.com/t/upgraded-8-0-5-8-0-7-opc-no-longer-connects/31533>\
**Category:** Ignition Early Access\
**Tags:** ignition80\
**Created:** [January 22, 2020, 10:36pm UTC](https://forum.inductiveautomation.com/t/upgraded-8-0-5-8-0-7-opc-no-longer-connects/31533 "2020-01-22T22:36:54Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [January 22, 2020, 10:37pm UTC](https://forum.inductiveautomation.com/t/upgraded-8-0-5-8-0-7-opc-no-longer-connects/31533/2 "2020-01-22T22:37:41Z")

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> [@Upgrade 7.9.12 -\> 7.9.13 : Opc Connection faulted](http://forum.inductiveautomation.com/t/upgrade-7-9-12-7-9-13-opc-connection-faulted/30901):
>
> I’ve updated Ignition to version 7.9.13. But I can no longer connect to Beckhoff UA OPC servers. I have the following error: nonce must be at least 32 bytes UaException: status=Bad\_NonceInvalid, message=nonce must be at least 32 bytes at org.eclipse.milo.opcua.stack.core.util.NonceUtil.validateNonce(NonceUtil.java:176) at org.eclipse.milo.opcua.stack.core.util.NonceUtil.validateNonce(NonceUtil.java:162) at org.eclipse.milo.opcua.sdk.client.session.SessionFsmFactory.activateSession(Session…

TL;DR: server you're connecting to is out of spec. Upgrade to 8.0.8 nightly or downgrade.

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