Help! Third Screen Stuck on Center Monitor

I have a new problem with triple monitor, MSFS2024: When I enable the third screen (intended for left monitor), it opens on the center monitor at Full-screen mode. When I used to have this problem (both 2020 and 2024), I would go and set the third screen to “Window” mode, dragged that window over to the left monitor, and changed it back to Full-screen. But recently, when I attempt to set the third screen to “Window”, it would remain at Full-screen; therefore, not possible to drag it (despite indicating “Window” in the game menu). The first and second screens do not have this problem. Problem exists no matter what’s the resolution.

I’ve even re-installed the nvidia driver from scratch.

Anyone know how to fix this?

Thanks.

Hi @discman4476 ,

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Perhaps there is a key press combination in game to go from full screen to windowed mode. Check you keyboard bindings.

I figured out how to recovered the triple-monitor operation. For those who may need to fix this same problem, you can edit the UserCfg.opt preference file located under the LocalCache folder. At the top of the file are the configuration for each of the three screens.

Version 66
{Video
Adapter "NVIDIA GeForce RTX 4080"
Monitor 1
Windowed 1
FullscreenBorderless 0
WindowActive 0
Resolution 2560 1440
FullScreenResolution 2560 1440
PosX -3727
PosY 136
WindowCustom0.Monitor 0
WindowCustom0.Windowed 0
WindowCustom0.FullscreenBorderless 1
WindowCustom0.WindowActive 0
WindowCustom0.Resolution 2346 1469
WindowCustom0.FullScreenResolution 1920 1080
WindowCustom0.PosX 873
WindowCustom0.PosY 71
WindowCustom0.CameraDegRotationAdd 1.700000 90.000000 0.000000
WindowCustom1.Monitor 2
WindowCustom1.Windowed 0
WindowCustom1.FullscreenBorderless 1
WindowCustom1.WindowActive 0
WindowCustom1.Resolution 1988 1265
WindowCustom1.FullScreenResolution 1920 1080
WindowCustom1.PosX -7405
WindowCustom1.PosY 793
WindowCustom1.CameraDegRotationAdd 0.000000 -91.000000 0.000000

“Monitor 1” is my center screen. There are two “WindowCustom” entries defining the Right (0) and Left (1) screens. From what I understand, “Windowed” and “FullscreenBorderless” set up whether the display is Windowed or Full-screen. If it’s Borderless, values in the FullScreenResolution entry take over. When it’s Windowed, the Resolution and PosX and PosY become important.

Make sure there’re no additional “WindowCustom”. Because when I started looking into this file, there were three WindowCustom sections. I deleted the extra one—which probably was the culprit.