# Unable to see Tag Providers using OPC Quick Client

**URL:** <https://forum.inductiveautomation.com/t/unable-to-see-tag-providers-using-opc-quick-client/113726>\
**Category:** Ignition\
**Created:** [February 3, 2026, 4:55pm UTC](https://forum.inductiveautomation.com/t/unable-to-see-tag-providers-using-opc-quick-client/113726 "2026-02-03T16:55:47Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![alainia.spencer](https://avatars.discourse-cdn.com/v4/letter/a/6a8cbe/32.png) [@alainia.spencer](https://forum.inductiveautomation.com/u/alainia.spencer)\
**Post date:** [February 3, 2026, 4:55pm UTC](https://forum.inductiveautomation.com/t/unable-to-see-tag-providers-using-opc-quick-client/113726/1 "2026-02-03T16:55:47Z")

</div>

I’m running into an issue where I’m unable to view any of the tag providers that are configured in my gateway when I use the OPC Quick Client. I do have the Tag Providers folder listed, however, no folders are listed below. I get this error in the logs:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/5/c5b80667c6c647527502f4e481b79c798c4c98b2.png)

```python
failed to get browse attributes for: NodeId{ns=2, id=Tag Providers}

java.util.concurrent.CompletionException: UaException: status=Bad_NodeIdUnknown, message=The node id refers to a node that does not exist in the server address space.

at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source)

at java.base/java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source)

at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(Unknown Source)

at java.base/java.util.concurrent.CompletableFuture.postComplete(Unknown Source)

at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(Unknown Source)

at org.eclipse.milo.opcua.sdk.server.api.AsyncOperationContext.failure(AsyncOperationContext.java:65)

at org.eclipse.milo.opcua.sdk.server.api.AddressSpaceComposite.lambda$browse$3(AddressSpaceComposite.java:214)

at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(Unknown Source)

at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(Unknown Source)

at java.base/java.util.concurrent.CompletableFuture.postComplete(Unknown Source)

at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(Unknown Source)

at org.eclipse.milo.opcua.sdk.server.api.AsyncOperationContext.failure(AsyncOperationContext.java:65)

at com.inductiveautomation.ignition.gateway.opcua.server.extags.ExposedTagsNamespace$browse$1.invokeSuspend(ExposedTagsNamespace.kt:192)

at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)

at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)

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)

Caused by: org.eclipse.milo.opcua.stack.core.UaException: status=Bad_NodeIdUnknown, description=The node id refers to a node that does not exist in the server address space.

at com.inductiveautomation.ignition.gateway.opcua.server.extags.ExposedTagsNamespace.browseTag(ExposedTagsNamespace.kt:237)

at com.inductiveautomation.ignition.gateway.opcua.server.extags.ExposedTagsNamespace.access$browseTag(ExposedTagsNamespace.kt:74)

at com.inductiveautomation.ignition.gateway.opcua.server.extags.ExposedTagsNamespace$browseTag$1.invokeSuspend(ExposedTagsNamespace.kt)

... 5 common frames omitted

```

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<div class="post-metadata">

**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:** [February 3, 2026, 4:58pm UTC](https://forum.inductiveautomation.com/t/unable-to-see-tag-providers-using-opc-quick-client/113726/2 "2026-02-03T16:58:19Z")

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Do your tag providers have access controls that aren't satisfied for the Ignition OPC loopback connection?

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<div class="post-metadata">

**Author:** ![alainia.spencer](https://avatars.discourse-cdn.com/v4/letter/a/6a8cbe/32.png) [@alainia.spencer](https://forum.inductiveautomation.com/u/alainia.spencer)\
**Post date:** [February 3, 2026, 6:12pm UTC](https://forum.inductiveautomation.com/t/unable-to-see-tag-providers-using-opc-quick-client/113726/3 "2026-02-03T18:12:31Z")

</div>

How would I figure this out?

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<div class="post-metadata">

**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:** [February 3, 2026, 6:18pm UTC](https://forum.inductiveautomation.com/t/unable-to-see-tag-providers-using-opc-quick-client/113726/4 "2026-02-03T18:18:31Z")

</div>

See if you have any security zones attached to your tag providers, and comparing to the default authentication profile used by the OPC server.