# OPCUA SERVER from a Docker. BadCommunicationError

**URL:** <https://discourse.nodered.org/t/opcua-server-from-a-docker-badcommunicationerror/82559>\
**Category:** General\
**Tags:** docker, opcua\
**Created:** [2 November 2023 22:09 UTC](https://discourse.nodered.org/t/opcua-server-from-a-docker-badcommunicationerror/82559 "2023-11-02T22:09:21Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Ahmaad](https://avatars.discourse-cdn.com/v4/letter/a/5e9695/32.png) [@Ahmaad](https://discourse.nodered.org/u/Ahmaad)\
**Post date:** [3 November 2023 09:37 UTC](https://discourse.nodered.org/t/opcua-server-from-a-docker-badcommunicationerror/82559/3 "2023-11-03T09:37:09Z")

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Hi Colin,  
yes I do.  
This is my reason:

> [@Problem with Flow with OPCUA Server](https://discourse.nodered.org/t/problem-with-flow-with-opcua-server/82533):
>
> Hello everyone, I have a problem with building an OPC UA server. I have built a flow where I use an OPC UA server. Everything worked great. I recently checked again and then I see that nothing works anymore. Node-Red runs on a server. All necessary palettes are added. I then deleted my flows and added an example flow from the library and tried it out. Unfortunately, this example doesn't work either. (see image) I use UA-Expert to check the connection. Picture 1: The problem is t…

😅

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