Open Control Panel → Programs and Features. Uninstall all existing:
Do not worry—the exclusive setup will reinstall the correct ones. ue4 prerequisites x64 setup exclusive
To verify successful deployment across a farm, use: Open Control Panel → Programs and Features
UE4PrereqSetup_x64.exe /quiet /norestart /log "%TEMP%\UE4Prereq.log"
For game studios with 20+ workstations or rendering farms, manually clicking through the GUI is impractical. The installer supports silent installation. Do not worry—the exclusive setup will reinstall the
If Step 1 fails, bypass the automatic installer entirely.