# Configuring Device Authentication

Navigation: Working with Nx Witness > Device Management (Cameras, Encoders and I/O Modules) > Setting Up Cameras and Devices > # Configuring Device Authentication |

All devices come with a predefined login and password combination. During the discovery process, Nx Witness attempts to use the manufacturer’s default credentials to access a device and acquire media streams. However, default login and passwords can vary between models or product lines, or may have been deliberately changed.

If Nx Witness cannot access a device using the default authentication, the device is shown as Unauthorized () in the Resource Tree and the following message will appear when a user attempts to view a live stream:

UNAUTHORIZED Please check authentication information.

Some devices require setting a password if they are discovered using default credentials. In this case, the device is displayed within the Resource Tree but an "unauthorized" message will be displayed when attempts are made to view streams from such devices.

To enter a uthorization parameters

1.Open Device Settings -> General.

2.Enter Login and Password in the Authentication section and click Apply or OK. To discard changes, click Cancel.

Note: It is possible to configure the same authentication credentials for several devices simultaneously. See “Sharing Parameters on Multiple Devices”.