Just installed the unreal engine 4.26.1 on a windows 10 laptop, but it crashes immediately on start up.
It does this with both a normal user and admin user.
When I look in the logs there is a sequence of error messages:
[2021.03.18-16.14.27:623][ 0]LogUnrealEdMisc: Total Editor Startup Time, took 13.870
[2021.03.18-16.14.27:859][ 0]LogD3D11RHI: CreateSwapChainForHwnd failed with result 'E_INVALIDARG' (0x80070057), falling back to legacy CreateSwapChain.
[2021.03.18-16.14.27:862][ 0]LogD3D11RHI: Error: CreateSwapChain invalid arguments:
Size:1110x774 Format:DXGI_FORMAT_R10G10B10A2_UNORM(0x00000018)
Windowed:1 SwapEffect:4 Flags: 0x00000802
[2021.03.18-16.14.27:862][ 0]LogD3D11RHI: Error: CreateSwapChainResult failed
at D:/Build/++UE4/Sync/Engine/Source/Runtime/Windows/D3D11RHI/Private/Windows/WindowsD3D11Viewport.cpp:228
with error E_INVALIDARG
[2021.03.18-16.14.27:862][ 0]LogOutputDevice: Warning:
Script Stack (0 frames):
[2021.03.18-16.14.27:863][ 0]LogWindows: Windows GetLastError: The operation completed successfully. (0)
[2021.03.18-16.14.32:483][ 0]LogWindows: Error: === Critical error: ===
[2021.03.18-16.14.32:483][ 0]LogWindows: Error:
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11Util.cpp] [Line: 258]
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: CreateSwapChainResult failed
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: at D:/Build/++UE4/Sync/Engine/Source/Runtime/Windows/D3D11RHI/Private/Windows/WindowsD3D11Viewport.cpp:228
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: with error E_INVALIDARG
[2021.03.18-16.14.32:484][ 0]LogWindows: Error:
[2021.03.18-16.14.32:484][ 0]LogWindows: Error:
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8de354b59 KERNELBASE.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8816bd096 UE4Editor-Core.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8816c07f8 UE4Editor-Core.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8813ce98d UE4Editor-Core.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8680c7142 UE4Editor-D3D11RHI.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff86807fb61 UE4Editor-D3D11RHI.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8680b0150 UE4Editor-D3D11RHI.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff867e26899 UE4Editor-SlateRHIRenderer.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff88cbceaf4 UE4Editor-SlateCore.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff85b254d38 UE4Editor-MainFrame.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff85b2320a5 UE4Editor-MainFrame.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff87526889b UE4Editor-UnrealEd.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff6454f102b UE4Editor.exe!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff6454f128a UE4Editor.exe!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff6455052ed UE4Editor.exe!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff64550801a UE4Editor.exe!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8dee17034 KERNEL32.DLL!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error: [Callstack] 0x00007ff8e0982651 ntdll.dll!UnknownFunction []
[2021.03.18-16.14.32:484][ 0]LogWindows: Error:
[2021.03.18-16.14.32:497][ 0]LogExit: Executing StaticShutdownAfterError
[2021.03.18-16.14.32:500][ 0]LogWindows: FPlatformMisc::RequestExit(1)
[2021.03.18-16.14.32:500][ 0]LogCore: Engine exit requested (reason: Win RequestExit)
[2021.03.18-16.14.32:504][ 0]Log file closed, 03/18/21 16:14:32
Any thoughts/remedies?
Best Wishes