# Problems accessing Kepware Tags

**URL:** <https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966>\
**Category:** Ignition\
**Created:** [August 2, 2017, 3:10pm UTC](https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966 "2017-08-02T15:10:21Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![mickificki](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@mickificki](https://forum.inductiveautomation.com/u/mickificki)\
**Post date:** [August 2, 2017, 3:10pm UTC](https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966/1 "2017-08-02T15:10:21Z")

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Hi, I’m trying to access my Kepware Tags via Ignition Designer and when doing so I get the following error:

Error browsing OPC.

When I click on details I get:

GatewayException: java.lang.NullPointerException  
caused by ExecutionException: java.lang.NullPointerException  
caused by NullPointerException

Ignition v7.9.0 (b2016101208)  
Java: Oracle Corporation 1.8.0\_131

Any ideas on what is causing this? Please let me know.

Thank you.

James Lee  
LA DWP  
Instrument Technician  
310-522-7541

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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:** [August 2, 2017, 3:14pm UTC](https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966/2 "2017-08-02T15:14:31Z")

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Can you upgrade Ignition to 7.9.3?

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<div class="post-metadata">

**Author:** ![mickificki](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@mickificki](https://forum.inductiveautomation.com/u/mickificki)\
**Post date:** [August 2, 2017, 3:23pm UTC](https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966/3 "2017-08-02T15:23:17Z")

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Hi Kevin,

I think I can try upgrading. I’ll let you know how it goes.

James

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**Author:** ![mickificki](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@mickificki](https://forum.inductiveautomation.com/u/mickificki)\
**Post date:** [August 4, 2017, 5:09pm UTC](https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966/4 "2017-08-04T17:09:46Z")

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Hi,

So I did the upgrade to 7.9.3, and now received an OPC connection error.

UaException: status=Bad\_ConfigurationError, message=no matching endpoints found  
at com.inductiveautomation.xopc2.client.ClientManager.lambda$null$5(ClientManager.java:148)  
at java.util.Optional.orElseThrow(Unknown Source)  
at com.inductiveautomation.xopc2.client.ClientManager.lambda$connect$7(ClientManager.java:148)  
at java.util.concurrent.CompletableFuture.uniWhenComplete(Unknown Source)  
at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(Unknown Source)  
at java.util.concurrent.CompletableFuture.postComplete(Unknown Source)  
at java.util.concurrent.CompletableFuture.complete(Unknown Source)  
at org.eclipse.milo.opcua.stack.client.UaTcpStackClient.lambda$receiveResponse$13(UaTcpStackClient.java:294)  
at org.eclipse.milo.opcua.stack.core.util.ExecutionQueue$PollAndExecute.run(ExecutionQueue.java:107)  
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)  
at java.util.concurrent.FutureTask.run(Unknown Source)  
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)  
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)  
at java.lang.Thread.run(Unknown Source)

7.9.3 (b2017060210)  
Oracle Corporation 1.8.0\_121

So we’ve lost connection to our PLC’s. Any advice is appreciated. Thanks.

James Lee  
LADWP  
Instrument Technician

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<div class="post-metadata">

**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:** [August 4, 2017, 5:20pm UTC](https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966/5 "2017-08-04T17:20:41Z")

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Try re-discovering the endpoints again: on the connection configuration page in the gateway, click the “More” button, then “endpoints”.

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**Author:** ![mickificki](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@mickificki](https://forum.inductiveautomation.com/u/mickificki)\
**Post date:** [August 4, 2017, 6:50pm UTC](https://forum.inductiveautomation.com/t/problems-accessing-kepware-tags/14966/6 "2017-08-04T18:50:24Z")

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Kevin that worked! Thank you!

James