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

Do not download this DLL from a “DLL download” website.

Do not manually copy it into System32 or SysWOW64.
You’ll likely break Windows’ API Set redirection and cause more errors.

Do NOT download api-ms-win-core-version-l1-1-1.dll from a third-party website.

These sites often provide:

Microsoft does not distribute this file individually — ever.

If you’re on Windows 7, 8, or 8.1, the UCRT is not included by default. You need to install an update.

Solution:

Alternatively, installing Visual Studio 2015-2022 Redistributable (from fix #1) automatically includes this update.

False. The genuine file is signed by Microsoft and located in C:\Windows\System32 or SysWOW64. However, malware sometimes uses similar-sounding names (e.g., api-ms-win-core-version-l1-1-1.dll with a zero instead of an 'O'). Always check the digital signature.

If an existing system file is damaged, SFC can repair it. Api-ms-win-core-version-l1-1-1.dll 64 Bit

Steps:

To understand the error, you must first understand the nature of this file. The naming convention "api-ms-win-core-" indicates that this DLL belongs to the Windows API Set—a virtualization layer introduced by Microsoft to decouple applications from specific system DLL versions.

Specifically, api-ms-win-core-version-l1-1-1.dll is part of the Universal C Runtime (UCRT) and the Windows App SDK. It provides core versioning functions that allow applications to query the operating system version. The "64 bit" designation means your application is compiled for x64 architectures. Do not download this DLL from a “DLL download” website

Contrary to popular belief, this file is not a standalone system DLL like kernel32.dll or user32.dll. Instead, it is an API Set redirection stub that forwards calls to the actual implementation in the system’s native DLLs (such as kernelbase.dll). This is why manually downloading this DLL from third-party websites is almost always a bad idea.