Short answer: Yes, after a game is successfully installed and runs without errors.
Long answer: This file is a one-time setup tool. Once the prerequisites are installed at the system level, the executable serves no ongoing purpose. Deleting it will not affect game performance or launch speed. However, consider:
Recommendation: Leave it in place. It does not run in the background, consume RAM, or phone home to Epic. It is inert until called by an installer. ue4prereqsetup-x64.exe
Yes, 100% safe – provided it comes from a legitimate source.
Warning: Like any executable, malicious actors could rename a virus to UE4PrereqSetup-x64.exe. Only run it if you trust the parent application (UE4, a known game, or the Epic Launcher). Short answer: Yes, after a game is successfully
When executed, ue4prereqsetup-x64.exe silently checks for and installs the following typical components:
You will typically encounter this file in one of three scenarios: Recommendation: Leave it in place
| Scenario | Location | Action |
|----------|----------|--------|
| Installing UE4 from Launcher | Downloaded temporary folder | Automatically runs once. |
| Running a packaged UE4 game | GameFolder\Engine\Extras\Redist\en-us\ | The game's launcher often runs it automatically on first start. |
| Manual server or build setup | Downloaded from Epic Games or GitHub | Run manually to fix dependency issues. |
Sometimes this installer fails. Here’s how to fix it:
