The Microsoft Incident Response team recently published technical guidance detailing the mechanics of Windows 11 Prefetch files. Contrary to persistent system optimization myths, deleting these cached records does not accelerate operating systems. In fact, purging these files directly slows application launch times. Therefore, users who routinely clear this folder introduce unnecessary operational friction. How Windows Prefetch Accelerates Program Execution The operating system stores Prefetch files inside the dedicated C:\Windows\Prefetch\ directory.