When starting a new session to a Windows 10 Pro laptop (10.0.14393) with 3 screens and Blank Guest Monitor enabled, 2 of 3 screens are blanked in the session.
Disabling Blank Guest Monitor, allows me to see all 3 screens but I need to keep this feature enabled and need all 3 screens available in the session. 2 of the screens are connecting via a Dell D1000 docking station (Display Port and VGA), the third screen is the laptop. The laptop screen and the VGA screen are consistently blank while the DisplayPort consistently works. This is true regardless of which screen is the primary.
After several minutes of an active session with Blank Guest Monitor enabled, the VGA screen will usually become visible also. The laptop screen never becomes visible. Sooner after, all 3 screens go blank and within 1 minute DisplayPort screen, and sometimes the VGA screen, become visible again.
We recently upgraded to ScreenConnect v6.2.12963.6312 which fixed a similar problem for Windows 7.
Customer support service by UserEcho