# Accepting an OPC UA Client certificate

By default, OPC UA Client certificates are not trusted. An OPC UA Client certificate must be accepted to establish a secure connection.

1. The OPC UA Server is started. The toggle switch is orange and in right position.
2. Upload an OPC UA Client certificate.

1. Open the OPC UA Server configuration.
2. Click Client certificates.
3. Select the certificate you want to accept.
4. Click the check mark icon.

1. The Trusted status of the certificate is set to Yes.