Api-ms-win-core-version-l1-1-1.dll 64 Bit May 2026

Since this DLL is part of the Universal C Runtime, the easiest fix is to install the latest Visual C++ Redistributable packages.

Steps:

Pro tip: Also install the x86 version if you run older 32-bit apps. Both can live side-by-side safely.

If you are a Windows user—particularly a gamer, software developer, or IT professional—you may have encountered a cryptic error message involving api-ms-win-core-version-l1-1-1.dll. This error typically states that the file is missing, not designed to run on Windows, or contains an error. The problem often appears when launching modern applications, video games, or development tools on older operating systems like Windows 7 or Windows 8.1.

In this comprehensive guide, we will explain exactly what the api-ms-win-core-version-l1-1-1.dll 64 bit file is, why you are seeing errors related to it, and—most importantly—how to fix it permanently without resorting to untrustworthy DLL download sites.

If you’re a C++ developer targeting Windows, you’ll rarely reference api-ms-win-core-version-l1-1-1.dll directly. Instead, you include <windows.h> and call GetFileVersionInfo. The linker, using the Windows SDK, automatically resolves these calls against the API Set contract if you’re building for Windows 8 or later. Api-ms-win-core-version-l1-1-1.dll 64 Bit

However, if you’re using Visual Studio 2015 or later with the Universal CRT, your application will implicitly depend on several API Sets, including the version one. That’s why missing API Set errors often appear when you copy a debug build to an older system.

To avoid such errors, either:

The version-l1-1-1 API set provides a small, focused set of functions related to retrieving file version information and operating system version details. These are the exported functions you’d expect to find (via a tool like dumpbin /exports):

And a few related helpers like GetProductInfo.

No actual code lives inside api-ms-win-core-version-l1-1-1.dll. Instead, when a 64-bit application loads, the Windows loader reads the import table, sees a reference to this DLL, and consults an internal redirection map (apisetschema.dll) to forward the call to the real implementation inside kernelbase.dll or api-ms-win-core-file-l1-1-0.dll. Since this DLL is part of the Universal

This redirection happens transparently to the developer and the running process.

If you are running a 64-bit version of Windows (which is standard for most modern PCs), you may be confused by seeing "32-bit" errors in your logs.

On a 64-bit OS:

Windows handles this redirection automatically via the file system redirector. This is why running the System File Checker (Solution 1) is superior to manually downloading the file—it ensures the correct version is placed in the correct directory for both 32-bit and 64-bit software compatibility.

The 64-bit version of this DLL is distinct from its 32-bit sibling for several reasons: Pro tip: Also install the x86 version if

Microsoft introduced API Sets in Windows 7 and greatly expanded them in Windows 8 / 10.
A developer who wants their app to work on Windows 7, 8, and 10 can link against api-ms-win-core-version-l1-1-1.dll. When the app runs, Windows itself resolves that name to the correct internal DLL.

The app is not broken. It’s using modern, correct coding practices.

api-ms-win-core-version-l1-1-1.dll isn’t a rogue file, a virus, or something you “lost.” It’s a modern Windows glue piece. An error mentioning it is a symptom—treat the cause (old OS, corrupted install, or broken app), not the symptom.

If someone tells you to “download that DLL from a website,” kindly thank them and then ignore that advice.