# OPC-UA problem on 7.8

**URL:** <https://forum.inductiveautomation.com/t/opc-ua-problem-on-7-8/11042>\
**Category:** Ignition\
**Created:** [January 14, 2016, 9:51am UTC](https://forum.inductiveautomation.com/t/opc-ua-problem-on-7-8/11042 "2016-01-14T09:51:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mustafa524](https://avatars.discourse-cdn.com/v4/letter/m/94ad74/32.png) [@mustafa524](https://forum.inductiveautomation.com/u/mustafa524)\
**Post date:** [January 14, 2016, 9:51am UTC](https://forum.inductiveautomation.com/t/opc-ua-problem-on-7-8/11042/1 "2016-01-14T09:51:07Z")

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today my OPC-UA Server stopped and all tag values was “uncertain”  
You can see wrapper logs below.  
any one got some ideas  
Thanks  
Mustafa  
INFO jvm 2 2016/01/14 10:04:37 ERROR [UaTcpClientSymmetricHandler] [10:04:37,712]: Error decoding symmetric message: received unknown secure channel token. tokenId=197, previousTokenId=195, currentTokenId=196   
INFO jvm 2 2016/01/14 10:04:37 UaException: status=Bad\_SecureChannelTokenUnknown, message=received unknown secure channel token. tokenId=197, previousTokenId=195, currentTokenId=196   
INFO jvm 2 2016/01/14 10:04:37 at com.digitalpetri.opcua.stack.client.handlers.UaTcpClientSymmetricHandler.validateChunkHeaders(UaTcpClientSymmetricHandler.java:247)  
INFO jvm 2 2016/01/14 10:04:37 at com.digitalpetri.opcua.stack.client.handlers.UaTcpClientSymmetricHandler.lambda$onSecureMessage$28(UaTcpClientSymmetricHandler.java:188)  
INFO jvm 2 2016/01/14 10:04:37 at com.digitalpetri.opcua.stack.core.channel.SerializationQueue.lambda$decode$2(SerializationQueue.java:61)  
INFO jvm 2 2016/01/14 10:04:37 at com.digitalpetri.opcua.stack.core.util.ExecutionQueue$PollAndExecute.run(ExecutionQueue.java:110)  
INFO jvm 2 2016/01/14 10:04:37 at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)  
INFO jvm 2 2016/01/14 10:04:37 at java.util.concurrent.FutureTask.run(Unknown Source)  
INFO jvm 2 2016/01/14 10:04:37 at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)  
INFO jvm 2 2016/01/14 10:04:37 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)  
INFO jvm 2 2016/01/14 10:04:37 at java.lang.Thread.run(Unknown Source)  
INFO jvm 2 2016/01/14 10:04:37 WARN [Active] [10:04:37,713]: Channel went inactive: [id: 0x3b4754ce, /192.168.8.1:53938 :\> /192.168.8.1:4096]   
INFO jvm 2 2016/01/14 10:04:37 WARN [TCPServerChannel] [10:04:37,744]: Received renew but currentChannel==null; closing.

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<div class="post-metadata">

**Author:** ![accyroy](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/accyroy/32/3386_2.png) [@accyroy](https://forum.inductiveautomation.com/u/accyroy)\
**Post date:** [January 14, 2016, 12:04pm UTC](https://forum.inductiveautomation.com/t/opc-ua-problem-on-7-8/11042/2 "2016-01-14T12:04:42Z")

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There was a problem with the OPC-UA server in 7.8.0, this has been fixed in the 7.8.1 beta. If you can’t install that, contact support and they can send you a fixed opc-ua module.

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**Author:** ![mustafa524](https://avatars.discourse-cdn.com/v4/letter/m/94ad74/32.png) [@mustafa524](https://forum.inductiveautomation.com/u/mustafa524)\
**Post date:** [January 14, 2016, 2:18pm UTC](https://forum.inductiveautomation.com/t/opc-ua-problem-on-7-8/11042/3 "2016-01-14T14:18:17Z")

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I have intalled new module .  
Everything is perfect now.  
Thanks for your answer.  
Mustafa