Since Microsoft will not provide a patch, fixing this behavior requires implementing third-party workarounds, user-space extensions, or developer patches. Solution 1: Implement the Extended Kernel (VxKex)
Microsoft has never officially supported GetSystemTimePreciseAsFileTime on Windows 7. In MSDN documentation, the "Requirements" section clearly states: .
Systems administrators sometimes deploy lightweight wrapper DLLs targeting kernel32.dll or api-ms-win-core-sysinfo-l1-2-0.dll using hooking frameworks like MinHook to intercept the specific call and inject the QPC-based emulation algorithm described above. Potential Risks of Emulation on Windows 7
GetSystemTimePreciseAsFileTime is a Windows API function designed for high-precision timekeeping. It retrieves the current system date and time with a higher degree of accuracy (sub-microsecond precision, depending on hardware) compared to the standard GetSystemTimeAsFileTime function. getsystemtimepreciseasfiletime windows 7 patched
Since newer software updates often introduce this dependency, rolling back to a previous version is a common fix. For example: Strawberry Music Player: Use version or earlier. RawTherapee: Use version Use version Strawberry Music Player Solutions for Developers Windows 7 support - General Usage - Julia Discourse
Caveat : This simple version can drift due to DST changes or system time adjustments. Production versions must handle SetSystemTime events by refreshing the baseline.
If you are looking for the technical reasoning behind why this function is sought after, here is how it compares to older Windows 7 methods: OS Support GetSystemTimeAsFileTime Low precision; standard on Win7. QueryPerformanceCounter Since Microsoft will not provide a patch, fixing
Advanced users who want to run Windows 10/11-only applications on Windows 7. 2. Manual Implementation (For Developers)
To understand the patch, you must first understand the target.
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If you want, I can:
The "magic" of this patch lies in how Windows manages the system clock.
The most common safe implementation works like this:
Since there is no system update to install this function, users and developers employ several workarounds:
Developers compiling their own software on Windows 7 can use a wrapper library (e.g., a custom static library that exports GetSystemTimePreciseAsFileTime ) and link it before any system imports. This is the cleanest, most portable approach because no binary patching is required – but it only works if you control the source code.