In some circumstances, VNC Viewer shows a black or blank screen on connection to a remote Windows 10 computer.
We are not sure of the cause. Customers have reported a change in behavior since Windows 10 update 1803, or it may be due to a particular graphics driver. If you are interested in helping us diagnose the problem by sending logs, please get in touch via chat or by submitting a ticket.
In the meantime, changing the VNC Server
CaptureMethod parameter is reported to work:
- On the remote Windows computer, open the VNC Server dialog.
- Select Options from the hamburger menu.
- On the Expert tab, filter the list for
CaptureMethod, and set the value to
- Restart VNC Server.
This can also be specified using the Registry, in the HKLM\Software\RealVNC\vncserver key. Create a String value named CaptureMethod and set a value of 1.
Note: If you have an Enterprise subscription, you can configure computers remotely or in bulk using Group Policy.