# OPC DA Client or Gateway
**URL:** https://discourse.nodered.org/t/opc-da-client-or-gateway/8335
**Category:** General
**Created:** [24 February 2019 18:35 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335 "2019-02-24T18:35:47Z")
**Posts on this page:** 7
**Page:** 2
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [28 August 2021 17:32 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335/21 "2021-08-28T17:32:31Z")
> [@venkateshbokka232](#):
>
> can you please tell me how to set the DCOM
Yes, search the internet, read the MX OPC Help files
> [@venkateshbokka232](#):
>
> and could you please provide any document related to MX OPC
MX OPC has built in help (F1)
> [@venkateshbokka232](#):
>
> and node-red da client
If the built in node help is insufficient or the nodes `readme.md` is insufficient :- you will have to search the forum, ask the author, work it out or wait for someone to respond to your question.
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### Author:  [@venkateshbokka232](https://discourse.nodered.org/u/venkateshbokka232)
#### Post date: [30 August 2021 05:22 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335/22 "2021-08-30T05:22:59Z")
thank you .i will try
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### Author:  [@opcAnywhere](https://discourse.nodered.org/u/opcAnywhere)
#### Post date: [8 August 2022 21:35 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335/23 "2022-08-08T21:35:53Z")
Try solution provided [here](https://github.com/duduyoyo/WebSocket4OPC). It utilizes full features provided by IIS so it is ready as an Edge connection or Gateway. It uses JSON as return so various clients can benefit from this format. Very simple installation and almost zero configuration to run. This new approach is worth a try no matter what client you are using.
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### Author:  [@magon202](https://discourse.nodered.org/u/magon202)
#### Post date: [12 August 2022 10:34 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335/24 "2022-08-12T10:34:54Z")
@opcAnywhere hi I'm trying to use the solution and I found this error Add appPool OPCPool failed
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### Author:  [@opcAnywhere](https://discourse.nodered.org/u/opcAnywhere)
#### Post date: [15 August 2022 03:14 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335/25 "2022-08-15T03:14:58Z")
@magon202 Your question already addressed in [discussion](https://github.com/duduyoyo/WebSocket4OPC/issues/2) section.
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### Author:  [@Stan70](https://discourse.nodered.org/u/Stan70)
#### Post date: [13 September 2022 11:37 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335/26 "2022-09-13T11:37:50Z")
Have you thought of using OPC Expert and then either OPC UA to destination or even MQTT. You would determine the data you want upfront so only sending that to the cloud and use the publish/subscribe method.
[ ](https://www.youtube.com/watch?v=stACit9Udr8)
OPC UA tunneling could also be used between source and target rather than MQTT- Either seems quite simple with this software.
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### Author:  [@YOGESHSHRA](https://discourse.nodered.org/u/YOGESHSHRA)
#### Post date: [5 November 2023 06:28 UTC](https://discourse.nodered.org/t/opc-da-client-or-gateway/8335/27 "2023-11-05T06:28:14Z")
I am getting error while connecting OPC server using OPC DA Read node. Any solution?
Error: Exception occured while forming Session Security Type3Response
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