1. Overview | Attribute | Details | |-----------|---------| | File Name | api-ms-win-core-file-l1-2-2.dll | | File Type | API Set DLL (ApiSet Stub DLL) | | Description | Windows Core File API Set Library | | Purpose | Part of Windows API contract redirection system | | Architecture | x86, x64, ARM64 (varies by system) | | Typical Size | 10–25 KB (stub) | | Digital Signature | Microsoft Windows | 2. What is an API Set DLL? API Set DLLs (also called ApiSet Stub DLLs ) are redirection libraries introduced in Windows 7 and expanded in Windows 8/10/11. They contain no actual executable code . Instead, they map API calls to the real implementation in system DLLs like kernel32.dll , kernelbase.dll , or ntdll.dll .
This file is in Windows 7 or earlier. 4. Exported Functions (Forwarded) This DLL does not implement functions. It forwards them to the actual implementation. Typical functions in this API set include: Api-ms-win-core-file-l1-2-2.dll
api-ms-win-core-file-l1-2-2.dll is part of the contract. 3. File Location | Windows Version | Typical Path | |----------------|---------------| | Windows 10 / 11 | C:\Windows\System32\ | | Windows 10 / 11 (32-bit on 64-bit) | C:\Windows\SysWOW64\ | | Windows 8 / 8.1 | C:\Windows\System32\ | API Set DLLs (also called ApiSet Stub DLLs