It is not a standalone DLL but is resolved at runtime by ApiSetSchema.dll to the actual implementation (e.g., kernel32.dll or version.dll).

@echo off
echo ========================================
echo API-MS-WIN-CORE-VERSION Verification
echo ========================================
echo.
:: Check if file exists
if exist "%SystemRoot%\System32\api-ms-win-core-version-l1-1-1.dll" (
echo [SUCCESS] DLL found in System32
) else (
echo [WARNING] DLL not found in System32
)
:: Check Windows version
ver
:: Check if API set is registered
reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v CurrentBuild
:: Test functionality with PowerShell
powershell -Command "& 
try 
Add-Type -TypeDefinition @'
using System;
using System.Runtime.InteropServices;
public class VersionTest 
[DllImport("api-ms-win-core-version-l1-1-1.dll", CharSet = CharSet.Unicode)]
public static extern int GetFileVersionInfoSize(string lptstrFilename, out int lpdwHandle);
'@ -ErrorAction Stop
Write-Host '[SUCCESS] DLL can be loaded' -ForegroundColor Green
 catch 
Write-Host '[ERROR] DLL cannot be loaded' -ForegroundColor Red
"

If a 64-bit program reports that this DLL is missing, follow these steps:

Reinstall that app – it may have shipped with an incorrect or missing dependency.

Example:

$winsxsPath = "C:\Windows\WinSxS" $found = Get-ChildItem -Path $winsxsPath -Filter "versionl1-1-1*" -Recurse -ErrorAction SilentlyContinue

if ($found) Copy-Item $found[0].FullName -Destination $systemPath -Force Write-Host "✓ Restored DLL from WinSxS" -ForegroundColor Green else Write-Host "✗ DLL not found in system. Consider Windows repair installation." -ForegroundColor Red

Many modern 64-bit applications require the Universal C Runtime (UCRT), which ships with Visual C++ Redistributables. The apimswincoreversionl111dll is often installed as part of the UCRT package.

Instructions:

This action installs a full set of correct 64-bit API Set DLLs, including apimswincoreversionl111dll.