How Do I Fix Error Code 0xc0000605?

[Quetzalcodename]

Hey @Kyriod2!

Check out this solved thread from another user with the same issue you are having:

How to fix Unreal 5 Boot issue?

Ok, so I’ve copied a file called dxilconv.dll from my System32 folder (C:\Windows\System32) and replaced the file in the folder listed above - keeping the original just in case. Edit: and renaming the copied file to simply dxil.dll - as per the original file. Unreal now appears to boot into the editor. Can someone let me know if this is an OK thing to do, or will it cause other issues further down the line?

I hope the above contains the solution you need!