# OPC connection fail from OPC Tag browser to designer

**URL:** <https://forum.inductiveautomation.com/t/opc-connection-fail-from-opc-tag-browser-to-designer/17674>\
**Category:** Ignition\
**Created:** [April 11, 2018, 7:45pm UTC](https://forum.inductiveautomation.com/t/opc-connection-fail-from-opc-tag-browser-to-designer/17674 "2018-04-11T19:45:26Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![osashidhar](https://avatars.discourse-cdn.com/v4/letter/o/b9e5f3/32.png) [@osashidhar](https://forum.inductiveautomation.com/u/osashidhar)\
**Post date:** [December 9, 2018, 12:31am UTC](https://forum.inductiveautomation.com/t/opc-connection-fail-from-opc-tag-browser-to-designer/17674/6 "2018-12-09T00:31:43Z")

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Hi,

We are using Kepware to connect to OPC UA server and exactly after 1 hour of establishing the connection we are facing the following error :

o.o.ua.transport.tcp.io.TcpConnection /\ ***.**.\ ***.** :49320 Error  
org.opcfoundation.ua.common.ServiceResultException: Bad\_RequestTypeInvalid (code=0x80530000, description=“The security token request type is not valid.”)  
at org.opcfoundation.ua.transport.tcp.io.TcpConnection$ReadThread.run(TcpConnection.java:782)

and after every 30 mins of retrying it is throwing the below error :

2018-12-05 10:23:44,995 ERROR [Blocking-Work-Executor-40] o.o.ua.transport.tcp.io.SecureChannelTcp -560875045 Failed to renew security token.  
org.opcfoundation.ua.common.ServiceResultException: Bad\_ServerNotConnected (code=0x800D0000, description=“The operation could not complete because the client is not connected to the server.”)  
at org.opcfoundation.ua.transport.tcp.io.TcpConnection.sendRequest(TcpConnection.java:1083)  
at org.opcfoundation.ua.transport.tcp.io.SecureChannelTcp.createSecureChannel(SecureChannelTcp.java:673)  
at org.opcfoundation.ua.transport.tcp.io.SecureChannelTcp.access$500(SecureChannelTcp.java:97)  
at org.opcfoundation.ua.transport.tcp.io.SecureChannelTcp$8.run(SecureChannelTcp.java:1214)  
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)  
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)  
at java.lang.Thread.run(Thread.java:748)

Can anyone check what would be possible cause of the issue ?

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