# Node-red-contrib-opcua not working after update to 0.2.351

**URL:** <https://discourse.nodered.org/t/node-red-contrib-opcua-not-working-after-update-to-0-2-351/100997>\
**Category:** General\
**Created:** [12 May 2026 20:14 UTC](https://discourse.nodered.org/t/node-red-contrib-opcua-not-working-after-update-to-0-2-351/100997 "2026-05-12T20:14:44Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![bob3150](https://avatars.discourse-cdn.com/v4/letter/b/b3f665/32.png) [@bob3150](https://discourse.nodered.org/u/bob3150)\
**Post date:** [12 May 2026 20:14 UTC](https://discourse.nodered.org/t/node-red-contrib-opcua-not-working-after-update-to-0-2-351/100997/1 "2026-05-12T20:14:44Z")

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I updated node-red to version 4.1.10 and node-red-contrib-opcua to 0.2.351 and now opcua is not working anymore → unknown OpcUA-Client  
Please help me to solve this problem my complete data-grabbing enviroment is not working anymore.

if I run manually npm install node-red-contrib-opcua the following output ist comming:

**npm** warn deprecated glob@9.3.5: Old versions of glob are not supported, and contain widely publicized security vulnerabilities, which have been fixed in the current version. Please update. Support for old versions may be purchased (at exorbitant rates) by contacting [i@izs.me](mailto:i@izs.me)

added 348 packages, removed 5 packages, changed 18 packages, and audited 571 packages in 13s

36 packages are looking for funding

run `npm fund` for details

**12** vulnerabilities (8 **moderate** , 4 **high** )

To address all issues, run:

npm audit fix

Run `npm audit` for details.

So I tried npm audit fix but nothing changed so I tried npm audit fix --force → it solved the vulnerabilities but opcua is also not working.

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**Author:** ![TotallyInformation](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/totallyinformation/32/31_2.png) [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Post date:** [12 May 2026 20:57 UTC](https://discourse.nodered.org/t/node-red-contrib-opcua-not-working-after-update-to-0-2-351/100997/2 "2026-05-12T20:57:58Z")

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> [@bob3150](#):
>
> **npm** warn deprecated glob@9.3.5:

That is just a warning, it is not relavent in this case.

> [@bob3150](#):
>
> So I tried npm audit fix but nothing changed so I tried npm audit fix --force → it solved the vulnerabilities but opcua is also not working.

**NEVER** run `npm audit fix` and especially not with the `--force` parameter, it WILL break things.

Stop Node-RED and from the command line:

```auto
cd ~/.node-red
rm -R ./node_modules
npm install

```

Then restart node-red and hope that it fixes the problem.

The folder contains all of the Node.js packages, it is fine to delete it as long as you then run `npm install` which will reinstall everything.

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<div class="post-metadata">

**Author:** ![bob3150](https://avatars.discourse-cdn.com/v4/letter/b/b3f665/32.png) [@bob3150](https://discourse.nodered.org/u/bob3150)\
**Post date:** [13 May 2026 04:21 UTC](https://discourse.nodered.org/t/node-red-contrib-opcua-not-working-after-update-to-0-2-351/100997/3 "2026-05-13T04:21:43Z")

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I tried your approach

npm install

**npm** warn deprecated node-opcua-client-crawler@2.127.1: true

**npm** warn deprecated node-red-dashboard@3.6.6: No longer maintained - please look at alternatives such as @flowfuse/node-red-dashboard or node-red-contrib-uibuilder

added 692 packages, and audited 693 packages in 9s

83 packages are looking for funding

run `npm fund` for details

**29** vulnerabilities (1 **low** , 13 **moderate** , 14 **high** , 1 **critical** )

To address issues that do not require attention, run:

npm audit fix

To address all issues (including breaking changes), run:

npm audit fix --force

Run `npm audit` for details.

It's the same again → unknown OpcUa-Client

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<div class="post-metadata">

**Author:** ![bob3150](https://avatars.discourse-cdn.com/v4/letter/b/b3f665/32.png) [@bob3150](https://discourse.nodered.org/u/bob3150)\
**Post date:** [13 May 2026 05:03 UTC](https://discourse.nodered.org/t/node-red-contrib-opcua-not-working-after-update-to-0-2-351/100997/4 "2026-05-13T05:03:48Z")

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I have uninstalled node-red-contrib-opcua and then installed it new → and now **everything ist working again**

Thanks for help.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [11 August 2026 05:04 UTC](https://discourse.nodered.org/t/node-red-contrib-opcua-not-working-after-update-to-0-2-351/100997/5 "2026-08-11T05:04:10Z")

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