---
title: Certificates
slug: bhdo-v3/certificates
createdAt: 2022-05-13T18:58:52.000Z
---

The *Certificates *pane allows you to manage clients that connect to the OPC UA server using certificate-based authentication. See [Manage OPC UA Authentication](docId\:Ort6h0atlNO8Kl1xznKf-) for more information. 

For a certificate-authenticated OPC UA client to work, the OPC UA server must accept (trust) that client's requests.

You can add and refresh an OPC UA client connection, view, refresh and remove client certificates, and manually download the OPC UA server certificate.

# Access OPC UA Certificates UI

**To access the OPC UA Certificates pane: **

1. Log in to Belden Horizon Data Operations.
2. From the Navigation panel, navigate to **OPC **>** Certificates**.
   The *Certificates *pane appears. 

![](https://api.archbee.com/api/optimize/vAqK-046vdh4I0e1y9cfX/gSEfKkVPfRhIa5itpdqCX_image.png)

# Next Steps

- [Add an OPC UA Client Connection](docId:3Kt-gXEanAFnmNJ4RFRhf) 
- [Add an OPC UA Server Connection with UA Expert Client](docId\:s8cYlLZ4BBYjiRCrO6JP6)
- [Download the OPC UA Server Certificate](docId\:OazgtRCVa2A4TDSpCguz_) 
- [Manage OPC UA Certificates](docId\:g7dlODO9FBKOtorku_pKq) 
- [View Active Sessions](docId\:FJn2F70Z2wpfevlegd8UC)