Exclusive |link| | Ue4 Prerequisites X64 Setup

The exclusive DX runtime conflicts with a newer driver-locked DX version. Fix: Extract the DX CAB files manually to %TEMP%\DXSetup and run dxsetup.exe /silent /noreboot before the UE4 prereq setup.

The magic word here is crucial. Unlike a typical game that bundles the standard VC++ redist, UE4’s prerequisite installer performs exclusive version locking . It ensures that specific build numbers of these runtimes are present, overriding default Windows update behaviors that might otherwise install newer, incompatible minor versions. ue4 prerequisites x64 setup exclusive

Unreal Engine places it in: