Upd __link__ - Getsystemtimepreciseasfiletime Windows 7

Here is the key information regarding this function and Windows 7:

🔧 What is GetSystemTimePreciseAsFileTime?

It retrieves the current system time with microsecond-level precision (1 µs resolution), unlike the older GetSystemTimeAsFileTime which updates roughly every 10–16 ms.
Great for:

  • Performance benchmarks
  • Logging with high-resolution timestamps
  • Real-time data acquisition

✅ How to Check If Your Windows 7 System Supports It

  1. Install KB2919355 (includes several prerequisite updates).
  2. Use a small test (C++ example): 
    #include <windows.h>
#include <stdio.h>

    int main() 
FILETIME ft;
GetSystemTimePreciseAsFileTime(&ft);
printf("High-res filetime supported!\n");
return 0;
 getsystemtimepreciseasfiletime windows 7 upd
    If it compiles and runs without linking errors, you're good.

Verification

To confirm if a Windows 7 machine has the required update: Here is the key information regarding this function

  • Open Control Panel > Programs > View installed updates.
  • Look for KB2670838.
  • Alternatively, check kernel32.dll version (should be 6.1.7601.18015 or later).

The Transition to Windows 7 End of Life

As of January 14, 2020, Windows 7 is no longer supported by Microsoft. However, many industrial, medical, and financial systems continue to run Windows 7 in isolated environments.

Important update:

  • KB2813345 remains available on the Microsoft Update Catalog.
  • No newer updates supersede or replace it.
  • The function is not included in any Windows 7 "Convenience Rollup" (KB3125574) – you must install specifically KB2813345.

For greenfield development, targeting Windows 10 or Windows 11 eliminates these compatibility concerns entirely – GetSystemTimePreciseAsFileTime is always available with full precision.