UE5.6 crashes immediately on startup

Development Platform & Builds
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1

When I load up UE5.6, it crashes with the following error:

Fatal error: [File:D:\build\++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Util.cpp] [Line: 1015] 
Payload->Queue.D3DCommandQueue->GetClockCalibration(&LocalTiming->GPUTimestamp, &LocalTiming->CPUTimestamp) failed 
at D:\build\++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Submission.cpp:907 
with error E_FAIL





UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

What does this mean?

1 Like
2

Hello there @ch00path1ng4!

Checking through the community, a few start up issues have appeared in relation with 5.6. Particularly, the error you are getting is tied to GPU issues, either software or hardware:

D3DCommandQueue->GetClockCalibration(…) failed with error E_FAIL

Let’s cover a few methods for resolution:

  • Refresh your nVIDIA drivers. Pick the “Clean Installation” option, as well as going for the “Developer” drivers, as these have more stable settings for engine work

  • Test switching between DX11 and DX12

  • Go to Windows Graphic Settngs, and set UE to High Performance

  • Since you recently updated to UE 5.6, try deleting all files from directory C:\Users\UserName\AppData\Local\UnrealEngine (make a backup just in case)

  • Access regedit, navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers, and add a TdrDelay at value 60 (this will prevent the engine from “losing” your GPU)

  • Ensure your GPU is properly mounted, and no connection is lost with your motherboard

3

My computer has an AMD Ryzen 5 5600G with Radeon Graphics

It says all drivers are up to date, as well.

And 5.6 was a clean install, not an update.

1 Like
4

im having the same problem and have CPU AMD Ryzen 5 4500U with Radeon Graphics 6 Cores

1 Like
5

switching to dx11 should work. create a shortcut to ue5.6 and append " -d3d11" to target. Idk why its happening. I have Ryzen 3 3250u , up until now no problems but 5.6 crashes on startup if its dx12. Hope they fix it soon!

1 Like
6

I am running into this issue at the program startup. It never loads any of the Initialization percentages.

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7

Hi there. I’m running into a similar issue with 5.6. Clean Install from the launcher, and it crashes immediately on startup on my laptop.

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image933Ă—931 109 KB

8

im having the same problem

9

Same issue on a laptop but after I open any menu.

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image1102Ă—1337 142 KB

10

I think I found a fix. I disabled Optimization for Windowed Games and I disabled Hardware Accelerated GPU Scheduling and now it works as it should

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image1657Ă—830 25.3 KB

11

having the same problem

12

This is the answer!

AMD Ryzen 5 5500U with Radeon Graphics here.

The " -d3d11" worked perfectly for me.

13

having the same problem, maybe AMD? I use 6900xt

1 Like
14

I have the same issue and all of my things are up to date, I have NVIDIA GeForce RTX 3060 Ti and This card is capable of running Unreal Engine 5.6.

Do you know a solution, I need it for video game design and to finish my college courses the last school year