# Opc da configuration error

**URL:** <https://discourse.nodered.org/t/opc-da-configuration-error/86771>\
**Category:** General\
**Created:** [26 March 2024 13:31 UTC](https://discourse.nodered.org/t/opc-da-configuration-error/86771 "2024-03-26T13:31:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![PRABHAKAR82](https://avatars.discourse-cdn.com/v4/letter/p/e47c2d/32.png) [@PRABHAKAR82](https://discourse.nodered.org/u/PRABHAKAR82)\
**Post date:** [26 March 2024 13:31 UTC](https://discourse.nodered.org/t/opc-da-configuration-error/86771/1 "2024-03-26T13:31:54Z")

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Hi Everyone  
I am trying to connect OPC-DA server to node-red by using OPC-DA client node, but it gives access denied error. In our OPC-DA server no user name and password configuration required it directly connected to another OPC-DA client application but when we try it to connect with node-red opc-da node then user name and password required So The question is, what I have to set for Username and password.  
Currently I added my system username and password.  
Please see attached screenshot for your reference

 ![opcda](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/7/d7cfa151e242ba1fa194ef9a2243819c90a12b4f.png)  
 ![opcda2](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/5/7/57255904873eba5deb66ff2276a797f4e06ea480.png)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [24 June 2024 13:32 UTC](https://discourse.nodered.org/t/opc-da-configuration-error/86771/2 "2024-06-24T13:32:34Z")

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