# OPC UA Connection Faulted After Upgrade **URL:** \ **Category:** Ignition\ **Created:** [November 11, 2020, 8:10pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561 "2020-11-11T20:10:29Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![controlng](https://avatars.discourse-cdn.com/v4/letter/c/fbc32d/32.png) [@controlng](https://forum.inductiveautomation.com/u/controlng)\ **Post date:** [November 11, 2020, 8:10pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/1 "2020-11-11T20:10:29Z")
Upgraded Ignition Edge 8.0.16 with a working standard OPC-UA Server running to 8.1.0 and got the following: > java.lang.Exception: OPC server connection is faulted. Type "com.inductiveautomation.OpcUaServerType" is not a known server type. > at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.newOpcConnection(OpcConnectionManagerImpl.java:158) > at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.addAllServers(OpcConnectionManagerImpl.java:134) > at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.startup(OpcConnectionManagerImpl.java:83) > at com.inductiveautomation.ignition.gateway.IgnitionGateway.startupInternal(IgnitionGateway.java:1106) > at com.inductiveautomation.ignition.gateway.redundancy.RedundancyManagerImpl.startup(RedundancyManagerImpl.java:293) > at com.inductiveautomation.ignition.gateway.IgnitionGateway.initRedundancy(IgnitionGateway.java:725) > at com.inductiveautomation.ignition.gateway.IgnitionGateway.lambda$initInternal$0(IgnitionGateway.java:659) > at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:518) > at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) > at java.base/java.util.concurrent.FutureTask.run(Unknown Source) > at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) > at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) > at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) > at java.base/java.lang.Thread.run(Unknown Source) > > 8.1.0 (b2020110211) > Azul Systems, Inc. 11.0.7 Under OPC-AU Connection in the config shows no OPC Connections. Try to create a new connection and get: > Field 'choice' is required. > but will not let me proceed. This was the case for 2 different upgrades, the first we have tried. Both use redundant pairs. I tried deleting the certificate files as stated above with no change after restart. ---
**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:** [November 11, 2020, 8:15pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/2 "2020-11-11T20:15:54Z")
Is the OPC UA module faulted? ---
**Author:** ![controlng](https://avatars.discourse-cdn.com/v4/letter/c/fbc32d/32.png) [@controlng](https://forum.inductiveautomation.com/u/controlng)\ **Post date:** [November 11, 2020, 8:19pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/3 "2020-11-11T20:19:17Z")
Ah, yes it is. Says it is not eligible for use with Ignition Edge, unless licensed. I will have to discuss this with our rep. These Edge installations should work as they did before the upgrade. ---
**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:** [November 11, 2020, 8:23pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/4 "2020-11-11T20:23:48Z")
Yep, sounds like the OPC UA module was unintentionally omitted from your license. I think this license check you’re seeing that results in a faulted module is new for 8.1. ---
**Author:** ![controlng](https://avatars.discourse-cdn.com/v4/letter/c/fbc32d/32.png) [@controlng](https://forum.inductiveautomation.com/u/controlng)\ **Post date:** [November 11, 2020, 8:24pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/5 "2020-11-11T20:24:50Z")
Thanks Kevin! ---
**Author:** ![controlng](https://avatars.discourse-cdn.com/v4/letter/c/fbc32d/32.png) [@controlng](https://forum.inductiveautomation.com/u/controlng)\ **Post date:** [November 27, 2020, 3:46pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/6 "2020-11-27T15:46:27Z")
Our Rep had us reactivate the license and the the modules changed from faulted to running. Other than one anomaly w/ a few modules on one gateway, this did the trick. Be sure to reactivate the license after an upgrade! ---
**Author:** ![joshdunstan](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/joshdunstan/32/43306_2.png) [@joshdunstan](https://forum.inductiveautomation.com/u/joshdunstan)\ **Post date:** [September 13, 2022, 5:34am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/7 "2022-09-13T05:34:04Z")
Hey guys, I’m having this issue too on a full Ignition install. ‘choice’ is required is what I get when I go to add the OPC connection. This is with Tag Historian and Vision installed. I was on 8.1.20 but decided the upgrade was what was causing the issue so am back at 8.1.3 which was stable. When I upgraded to 8.1.20 I had to install the OPCUA Server module to get the connections to appear correctly. But in this instance, the None/None security option was not available, so whilst I could still connect to the OPC server, I could not see any tags. The opc connection that was in my gateway backup is gone when I restore it without the OPCUA Server module installed - which I dont need. ---
**Author:** ![joshdunstan](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/joshdunstan/32/43306_2.png) [@joshdunstan](https://forum.inductiveautomation.com/u/joshdunstan)\ **Post date:** [September 13, 2022, 5:35am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/8 "2022-09-13T05:35:54Z")
java.lang.Exception: OPC server connection is faulted. Type “com.inductiveautomation.OpcUaServerType” is not a known server type. at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.newOpcConnection(OpcConnectionManagerImpl.java:158) at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.addAllServers(OpcConnectionManagerImpl.java:134) at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.startup(OpcConnectionManagerImpl.java:83) at com.inductiveautomation.ignition.gateway.IgnitionGateway.startupInternal(IgnitionGateway.java:1105) at com.inductiveautomation.ignition.gateway.redundancy.RedundancyManagerImpl.startup(RedundancyManagerImpl.java:293) at com.inductiveautomation.ignition.gateway.IgnitionGateway.initRedundancy(IgnitionGateway.java:724) at com.inductiveautomation.ignition.gateway.IgnitionGateway.lambda$initInternal$0(IgnitionGateway.java:658) at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:538) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.base/java.lang.Thread.run(Unknown Source) 8.1.3 (b2021030309) Azul Systems, Inc. 11.0.9 ---
**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 13, 2022, 12:40pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/9 "2022-09-13T12:40:11Z")
This error means you probably don't have the OPC UA module installed, or you do but it's faulted. > [@joshdunstan](#): > > The opc connection that was in my gateway backup is gone when I restore it without the OPCUA Server module installed - which I dont need. incorrect. The OPC UA module doesn't just provide the server, it also provides the client functionality. ---
**Author:** ![Jesse\_Blanton](https://avatars.discourse-cdn.com/v4/letter/j/6f9a4e/32.png) [@Jesse\_Blanton](https://forum.inductiveautomation.com/u/Jesse_Blanton)\ **Post date:** [June 2, 2023, 10:19pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/10 "2023-06-02T22:19:46Z")
Need help with this, please. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/1/d1a5d2bc1d290f0b9434bc1020c6f77ef9daf9f8.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/7/775db77757b76ff1d538e7b3ce4f048ce89d2ba8.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/8/98654c62289b89afaee1b54da626e3468c4736f4.png) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [June 2, 2023, 11:08pm UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted-after-upgrade/40561/11 "2023-06-02T23:08:31Z")
Your screenshot says v8.0.12. Which is ancient and unsupported. You are missing relevant features from the v8.1.x series. For now, look at this topic and recommendations: > [@Ignition OPC UA loopback connection - can it expire?](https://forum.inductiveautomation.com/t/ignition-opc-ua-loopback-connection-can-it-expire/67090/9): > > So, there already was a mention of this expiration in the docs, and they've now added an explicit mention that even the loopback connection will stop working if the certificates expire or are otherwise invalid. [OPC UA Security - Ignition User Manual 8.1 - Ignition Documentation (inductiveautomation.com)](https://docs.inductiveautomation.com/display/DOC81/OPC+UA+Security#OPCUASecurity-RegenerateCurrentCertificates)