Getsystemtimepreciseasfiletime Windows 7 Upd Verified -

The GetSystemTimePreciseAsFileTime function is not supported on Windows 7. It was introduced with Windows 8 and Windows Server 2012 to provide high-precision system time (<1us).

The frequent appearance of this function in "Windows 7 update" discussions usually refers to application crashes rather than a system update you need to install. Why You See This Error on Windows 7

Users on Windows 7 often encounter the error message: “The procedure entry point GetSystemTimePreciseAsFileTime could not be located in the dynamic link library KERNEL32.dll”. This happens because:

Modern Toolchains: Developers using the latest versions of Visual Studio (v145 toolset) or Qt have dropped Windows 7 support.

Automatic Dependencies: Even if a programmer doesn't use the function, modern compilers may automatically insert calls to it for standard library features like std::chrono, making the resulting program incompatible with Windows 7.

Third-Party Libraries: Popular libraries like SDL or libuv began using this API for better timing, inadvertently breaking compatibility with older OS versions. Can You "Update" Windows 7 to Support It?

No official Microsoft update exists to add this function to Windows 7. Because the function is tied to core kernel changes in how time is handled, it cannot be simply patched in via a Knowledge Base (KB) update. Common Solutions and Workarounds

If you are trying to run a program that triggers this error on Windows 7, consider these options: For Users:

Downgrade the Software: Look for an older version of the application released before 2020–2021, when Windows 7 support was still common (e.g., Aseprite v1.3.9.2 or Strawberry 0.9.3).

Nightly/Beta Branches: Some developers provide "legacy" or nightly builds that specifically avoid this API to maintain Windows 7 compatibility. For Developers:

Use a Fallback: Implement a check to use GetSystemTimeAsFileTime (the standard version) if the OS is older than Windows 8.

Target Older Toolsets: Use older compiler toolsets (like v143 in Visual Studio) that do not have a hard dependency on this newer API. getsystemtimepreciseasfiletime windows 7 upd

Dynamic Loading: Use GetProcAddress to check for the function at runtime rather than linking to it statically.

Are you trying to run a specific program that’s giving you this error, or are you developing an app and looking for a way to support Windows 7? GetSystemTimePreciseAsFileTime error on Windows 7 #101

Once upon a time, in the world of Windows development, there was a specialized function called GetSystemTimePreciseAsFileTime. It was a hero for developers who needed time measurements with microsecond precision (<1us), far better than the standard 1–15 millisecond resolution of older methods.

However, this function has a tragic flaw for those still living in the "classic" era:

The Birthday Barrier: GetSystemTimePreciseAsFileTime was born with Windows 8.

The Windows 7 Ghost: Because it doesn't exist in the Windows 7 version of KERNEL32.dll, any modern program that tries to call it on Windows 7 will immediately crash with a "Procedure entry point not found" error. The Workaround Story

If you are a developer trying to keep your software alive on Windows 7, there is no official "update" or "KB article" that adds this function to the old OS. Microsoft intentionally moved newer toolsets (like MSVC v145) to depend on these modern APIs, effectively ending support for Windows 7 targets. To solve this, developers often use a fallback strategy: GetSystemTimePreciseAsFileTime error on Windows 7 #101

There is no official Windows update to add GetSystemTimePreciseAsFileTime to Windows 7. This function was first introduced in Windows 8 and is not present in the kernel32.dll of older operating systems.

If you are seeing an error like "The procedure entry point GetSystemTimePreciseAsFileTime could not be located," it usually means a modern application or toolchain (such as MSVC v145) is trying to run on an unsupported system. Potential Solutions and Workarounds

You're looking for information on GetSystemTimePreciseAsFileTime on Windows 7.

Unfortunately, GetSystemTimePreciseAsFileTime is a function that was introduced in Windows 8, not Windows 7. However, I can provide you with some useful information on the topic. Upgrading to Windows 8 or later If you

What is GetSystemTimePreciseAsFileTime?

GetSystemTimePreciseAsFileTime is a Windows API function that retrieves the current system time with high precision. It returns the current system time in the form of a FILETIME structure, which represents the number of 100-nanosecond intervals that have elapsed since January 1, 1601.

Why is GetSystemTimePreciseAsFileTime not available on Windows 7?

Windows 7 does not support GetSystemTimePreciseAsFileTime because it was introduced in Windows 8 as part of a larger effort to improve timing and synchronization on the Windows platform. Windows 7 is an earlier version of Windows that does not have this function.

Alternatives on Windows 7

If you need to retrieve the system time with high precision on Windows 7, you can use the GetSystemTime function, which is available on Windows 7. However, GetSystemTime has lower precision than GetSystemTimePreciseAsFileTime, with a resolution of around 10-20 milliseconds.

Here's an example of how to use GetSystemTime on Windows 7:

#include <Windows.h>
int main() 
    SYSTEMTIME st;
    GetSystemTime(&st);
    // Use the SYSTEMTIME structure
    return 0;

Upgrading to Windows 8 or later

If you need the high precision provided by GetSystemTimePreciseAsFileTime, you may want to consider upgrading to Windows 8 or a later version of Windows.

Useful article

Here's a useful article on the topic:

Windows 8 and Windows Server 2012: High-precision timing

This article discusses the high-precision timing capabilities introduced in Windows 8 and Windows Server 2012, including the GetSystemTimePreciseAsFileTime function.

1. Not a true microsecond source

The precision is 1 microsecond, but the accuracy depends on the underlying hardware and system timer resolution. On Windows 7, the function uses the same system time source as other time functions, just with higher granularity.

Why Wasn't It Included Earlier?

The original Windows 7 kernel (NT 6.1) did not implement the necessary internal interfaces for exposing high-resolution UTC time via the Win32 API. Windows 8 (NT 6.2) introduced a major refactoring of kernel time management, including:

A dedicated high-resolution system time source isolated from clock interrupt drift.
More robust handling of TSC synchronization across CPU cores.
Updated KeQuerySystemTimePrecise kernel-mode API.

Backporting this functionality required changes to kernel32.dll, ntdll.dll, and the kernel itself. KB2813345 provided a limited, but functional, backport.

✅ Good news for Windows 7 users

Contrary to popular belief, this API is available on Windows 7 – but only after installing a specific update.

🔧 Quick check in your code

#include <windows.h>
void test() 
FILETIME ft;
// If on Windows 7 without update, this function pointer will be NULL
VOID WINAPI pFunc = (VOID WINAPI ()(LPFILETIME))
GetProcAddress(GetModuleHandle(L"kernel32"), "GetSystemTimePreciseAsFileTime");
if (pFunc) 
    pFunc(&ft);
    // Use ft
 else 
    // Fallback to GetSystemTimeAsFileTime (millisecond precision)
    GetSystemTimeAsFileTime(&ft);

The Windows 7 Update That Changes Things

Update: KB3033929 (or the later rollup KB3125574)

Microsoft backported GetSystemTimePreciseAsFileTime to Windows 7 via Security Update KB3033929 (released March 2015). This update was primarily released to address SHA-2 code signing support, but it also added several new APIs to the platform, including our high-precision time function.