Frequently Asked Question

DeskCamera uses ONVIF TCP ports so NVR/VMS systems can add, configure, and control DeskCamera as an ONVIF camera.

By default, DeskCamera uses ONVIF port 8090 for the first camera. DeskCamera 6.0.0 uses the default dynamic ONVIF port range 8090-8110 and keeps dynamically selected ports stable across upgrades, application restarts, and Windows user switching.

For the full port list and firewall details, see Ports used by DeskCamera and Configuring firewall rules.

When to change the ONVIF port

Usually it is best to keep Auto select ONVIF Port enabled. Change the ONVIF port only when:

- Another application already uses the required ONVIF port
- A firewall or network policy requires a specific TCP port
- An NVR/VMS is configured manually and must keep a fixed ONVIF address

Multiple Channels mode and Multiple Cameras mode

The Static ONVIF Port setting applies to Multiple Channels mode only.

In Multiple Cameras mode, DeskCamera creates several ONVIF camera instances. Because one static ONVIF port cannot serve several ONVIF cameras at the same time, DeskCamera automatically assigns ONVIF ports from the dynamic port range.

For more information, see Multiple Channels mode vs Multiple Cameras mode.

How to set a static ONVIF port

1) Stop the DeskCamera camera
2) Open Options
3) Open the General tab
4) Uncheck Auto select ONVIF Port
5) Enter the required value in Static ONVIF Port
6) Confirm the port registration prompt if DeskCamera shows it
7) Start the DeskCamera camera again

After the camera starts, check the Started Cameras list and use the displayed ONVIF address when adding DeskCamera to an NVR/VMS.

If the ONVIF port was changed after the camera had already been added to an NVR/VMS, update the camera address in the NVR/VMS as well.

Multi-user mode notes

In Shared mode, the PC appears as one shared DeskCamera camera.

In Per-user mode, each Windows user can have a separate DeskCamera camera and separate settings. If several Windows users may run DeskCamera at the same time, avoid using the same static ONVIF port for more than one user. Use Auto select ONVIF Port or configure a unique static port for each user.

If settings are locked, unlock them before changing the ONVIF port. See Camera Instance Mode and Lock Settings.

Firewall notes

If the selected ONVIF port is inside the default DeskCamera range 8090-8110, the installer-created firewall rule normally covers it.

If you use a static ONVIF port outside the default range, or if firewall rules are managed manually, allow inbound TCP traffic for that port on the DeskCamera PC.

Troubleshooting

If DeskCamera cannot start after changing the ONVIF port:

1) Make sure the port is not already used by another application
2) If using Per-user mode, make sure another Windows user is not already using the same static port
3) Choose another port or enable Auto select ONVIF Port
4) Check that Windows Firewall or domain firewall policy allows the selected TCP port
5) If DeskCamera asks to register the ONVIF service port, confirm the prompt and provide administrator approval if Windows requires it