Because this is a hardware-dependent kernel function, it cannot be "patched" into Windows 7 via a simple software update. Instead, developers and users must use , shims , or backports . 🛠️ The Technical Challenge
The function GetSystemTimePreciseAsFileTime was introduced in to provide sub-microsecond precision. It does not exist natively in the Windows 7 kernel ( kernel32.dll ). getsystemtimepreciseasfiletime windows 7 patched
To maintain monotonic behavior and avoid backward jumps, the patched function also includes logic to smooth out differences between the performance counter and the system clock. Because this is a hardware-dependent kernel function, it