Game failed to launch on Windows 11

[QuoWarrior]

Good evening, everyone.

I have recently upgraded to Windows 11, and three of my Byzantine games have stopped working (PSCAMP, FOG II and FOG II Medieval).
I will post the errors regarding the other two games in their appropriate forums, while here goes the description of what happens in FOG II Medieval: I click on Steam to run the game, the launcher appears, and when I click to actually play, the game crashes and I get two error notifications.

The first one reads:

Failed to create device for rendering. Invalid resolution, or cannot run without at least shader model 3.0
(0)

While the second one reads:

*** Unhandled Exception! ExpCode: 0x80000003 ExpFlags: 0 ExpAdress: 0x0055F31D Please report!

The error log contains the following information:

20230817_040438
VER:10508 BUILD:10009 Jan 11 2023
PLATFORM: WINDOWS
WinVer:10.0.22621.2070
0: AMD Radeon RX 6900 XT
CPU String: AuthenticAMD
Stepping ID = 2
Model = 1
Family = 15
Extended model = 2
Extended family = 10
CLFLUSH cache line size = 64
APIC Physical ID = 4
CPU Brand String: AMD Ryzen 9 5900X 12-Core Processor
Cache Size = 512K
Found DirectX Version Number: 4.09.00.0904
Creating Device.....
MonkeyInitStart
MIS: Found DD
MIS: IsHW
MIS: SetCoop
MIS: Setting Disp Mode
Failed HW VP - trying SW
Failed to set display mode

The device has been lost but cannot be reset at this time. Therefore, rendering is not possible.
Trying 1920x1080
MonkeyInitStart
MIS: Found DD
MIS: IsHW
MIS: SetCoop
MIS: Setting Disp Mode
Failed HW VP - trying SW
Failed to set display mode

The device has been lost but cannot be reset at this time. Therefore, rendering is not possible.
Trying 1280x720
MonkeyInitStart
MIS: Found DD
MIS: IsHW
MIS: SetCoop
MIS: Setting Disp Mode
Failed HW VP - trying SW
Failed to set display mode

The device has been lost but cannot be reset at this time. Therefore, rendering is not possible.
Trying 1024x768
MonkeyInitStart
MIS: Found DD
MIS: IsHW
MIS: SetCoop
MIS: Setting Disp Mode
Failed HW VP - trying SW
Failed to set display mode

The device has been lost but cannot be reset at this time. Therefore, rendering is not possible.
Trying 800x600
MonkeyInitStart
MIS: Found DD
MIS: IsHW
MIS: SetCoop
MIS: Setting Disp Mode
Failed HW VP - trying SW
Failed to set display mode

The device has been lost but cannot be reset at this time. Therefore, rendering is not possible.
ERROR
Failed to create device for renderiing. Invalid resolution, or cannot run without at least shader model 3.0
(0) : Failed
ERROR

######## EXCEPTION: 0x80000003 at address: 0x0055F31D
Starting Debugger
SEARCHING: D:\SteamLibrary\steamapps\common\Field of Glory II Medieval;D:\SteamLibrary\steamapps\common\Field of Glory II Medieval;C:\WINDOWS
D:\SteamLibrary\steamapps\common\Field of Glory II Medieval;D:\SteamLibrary\steamapps\common\Field of Glory II Medieval;C:\WINDOWS
SGA: KernelErrorHandler
KernelErrorHandler
c:\dev\kernel\kernelerror.cpp(276) : +0 bytes (KernelErrorHandler) 0
SGA: Error
Error
c:\dev\kernel\kernelerror.cpp(136) : +17 bytes (Error) 0
SGA: StartApp
StartApp
c:\dev\ba2_tile_shader\game\system.cpp(855) : +10 bytes (StartApp) 0
SGA: EntryPoint
EntryPoint
c:\dev\ba2_tile_shader\game\system.cpp(1715) : +5 bytes (EntryPoint) 0
SGA: WinMain
WinMain
c:\dev\archon\platform_windows.cpp(568) : +9 bytes (WinMain) 0
SGA: __tmainCRTStartup
__tmainCRTStartup
f:\dd\vctools\crt_bld\self_x86\crt\src\crtexe.c(578) : +29 bytes (__tmainCRTStartup) 0
SGA: BaseThreadInitThunk
BaseThreadInitThunk
SGA: RtlInitializeExceptionChain
RtlInitializeExceptionChain
SGA: RtlClearBits
RtlClearBits
Debugger Cleanup

I'd also like to point out that I have already tried some of the fixes suggested in cases similar to mine, like manually adjusting the resolution to my native display in the OPTIONS.txt file, deleting the file, and doing a clean reinstall. It was of no avail, however.

I'm running Windows 11, my CPU is an AMD Ryzen 9 5900X 12-Core Processor, my GPU is an AMD Radeon RX 6900 XT and my display is 2560x1440 (144Hz).

Help would be enormously appreciated, since I cherish this game quite a lot and would be absolutely disheartened by not being able to play it again.

[rbodleyscott]

Pip is on the case - as per the thread on the Pike and Shot forum.

https://www.slitherine.com/forum/viewtopic.php?t=112841