# Vaisala OPC Connection through Ignition

**URL:** <https://forum.inductiveautomation.com/t/vaisala-opc-connection-through-ignition/105349>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [April 21, 2025, 7:53pm UTC](https://forum.inductiveautomation.com/t/vaisala-opc-connection-through-ignition/105349 "2025-04-21T19:53:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ivan.villegas](https://avatars.discourse-cdn.com/v4/letter/i/f05b48/32.png) [@ivan.villegas](https://forum.inductiveautomation.com/u/ivan.villegas)\
**Post date:** [April 21, 2025, 7:53pm UTC](https://forum.inductiveautomation.com/t/vaisala-opc-connection-through-ignition/105349/1 "2025-04-21T19:53:25Z")

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Hello,  
I am having some issues connecting to an OPC UA server (Vaisala). I can read the OPC UA Server's name but when I try to connect I am receiving:

UaServiceFaultException: status=Bad\_UserAccessDenied, message=User does not have permission to perform the requested operation.  
at org.eclipse.milo.opcua.stack.client.UaStackClient.lambda$deliverResponse$5(UaStackClient.java:337)  
at org.eclipse.milo.opcua.stack.core.util.ExecutionQueue$Task.run(ExecutionQueue.java:119)  
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)

8.1.45 (b2025010709)  
Azul Systems, Inc. 17.0.13

Also, the VAISALA server has this requirements:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/3/93bdda61926f2595a976c76ff7143139f262255d.jpeg)

But I realized that my client certificate does not have the DNS information, how could I add it?

Best regards.

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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:** [April 21, 2025, 8:29pm UTC](https://forum.inductiveautomation.com/t/vaisala-opc-connection-through-ignition/105349/2 "2025-04-21T20:29:42Z")

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> [@ivan.villegas](#):
>
> UaServiceFaultException: status=Bad\_UserAccessDenied, message=User does not have permission to perform the requested operation.

Sounds like you just have the wrong username/password or one without enough permission.

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<div class="post-metadata">

**Author:** ![ivan.villegas](https://avatars.discourse-cdn.com/v4/letter/i/f05b48/32.png) [@ivan.villegas](https://forum.inductiveautomation.com/u/ivan.villegas)\
**Post date:** [April 29, 2025, 2:52am UTC](https://forum.inductiveautomation.com/t/vaisala-opc-connection-through-ignition/105349/3 "2025-04-29T02:52:51Z")

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Thanks.  
Yes, it looks that the username and password that the administrator gave to me, were wrong.