GetSystemTimePreciseAsFileTime is a Win32 API function defined in sysinfoapi.h . Its signature is:
GetSystemTimePreciseAsFileTime retrieves the current system date and time with a high level of precision (less than 1 microsecond).
The most reliable way to run the software without modifying your system files is to install the previous release that still maintains Windows 7 compatibility. getsystemtimepreciseasfiletime windows 7 upd
// A wrapper function that behaves like GetSystemTimePreciseAsFileTime // but is compatible with Windows 7. void GetSystemTimePrecise_Win7Support(LPFILETIME lpSystemTimeAsFileTime);
void GetSystemTimePreciseAsFileTime(LPFILETIME lpSystemTimeAsFileTime); When Windows 7 users attempt to run this
The issue typically stems from by software developers rather than changes to your system. GetSystemTimePreciseAsFileTime error on Windows 7 #101
You can check if the update is installed via: a popular network performance measurement tool
iperf3, a popular network performance measurement tool, began using GetSystemTimePreciseAsFileTime in version 3.17.1. When Windows 7 users attempt to run this version, they encounter the missing entry point error. The impact is severe: without the high-precision time function, network test accuracy degrades from microsecond-level to second-level, rendering the tool ineffective for precise throughput measurements.
If you are encountering an "entry point not found" error for this function on Windows 7, it is because a program or library you are using was built with a newer toolset (like MSVC v145) that assumes a Windows 8 baseline. Visual Studio Developer Community Solutions for Developers
Again, check for missing entry point exceptions and fall back to DateTime.UtcNow (which internally uses GetSystemTimeAsFileTime ).
The core of the issue is an operating system version mismatch: