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api-ms-win-core-util-l1-1-0.dll - Analyze and How to Fix Errors

★★★★★ Verified File (27.08.2026)

Description


Creation date: 20.11.2015 06:52:51
File version: 10.0.10586.15
Antivirus scan: ✅ OK
Category: System
File size: 18.9 kb.
Architecture: 64-bit (x64)
✅ This file is compatible with 64-bit Windows and ❌ will not work on a 32-bit operating system.
How to determine your system architecture: Press keys Win+R , enter symbols wmic os get osarchitecture , press Enter.

Digital file signature api-ms-win-core-util-l1-1-0.dll

Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA
Encryption algorithm: SHA1
Time stamp: Apr 5 06:03:52 2018 GMT

The api-ms-win-core-util-l1-1-0.dll is a system file used by Microsoft Windows. This dynamic-link library (DLL) provides core utility functions that are crucial for the operation of various applications and components within the Windows operating system.

MD5: b5ce0749570545f917540bbc82f479f6
SHA-1: 96d69c3bd366d84ba5abd7b61a80d8f926655dee
SHA-256: 26aa9160f1d8a561ebc98c4c02a71c86a9dba67e3a2d32276702b133e2c2d93e

Where it is used

This DLL file is utilized by a variety of programs, including but not limited to:

  • Windows Explorer and File Explorer
  • Device Manager and Device Installation Wizard
  • System Information tools like the Task Manager
  • Various third-party applications that require low-level utility functions

Errors related to api-ms-win-core-util-l1-1-0.dll

Common issues with this DLL file may include:

  • "api-ms-win-core-util-l1-1-0.dll not found"
  • "Missing api-ms-win-core-util-l1-1-0.dll"
  • "Error loading api-ms-win-core-util-l1-1-0.dll"

File security

The file is safe to use as it comes bundled with the Windows operating system. It is signed by Microsoft, which adds an additional layer of security. However, if you encounter a version that does not match your installed OS or has been tampered with, it could pose a risk.

api-ms-win-core-util-l1-1-0.dll was not found
The code execution cannot proceed because api-ms-win-core-util-l1-1-0.dll was not found
Failed to load api-ms-win-core-util-l1-1-0.dll
The procedure entry point ... could not be located in api-ms-win-core-util-l1-1-0.dll

1.
2a. 👉 Try to copy api-ms-win-core-util-l1-1-0.dll C:\Program Files\Your program\
2b. Also try to copy to bin, lib folders.
2c. Try to copy api-ms-win-core-util-l1-1-0.dll C:\Program Files (x86)\Your program\
👉 Before you replace any files, make sure to back them up.
How do I switch to the current Windows directory?
- Press and hold the key "win" on the keyboard and press the key "r" , then write %windir% and press the key Enter.
How to switch to the directory Program Files (x86) ?
- Press Win+R then enter %ProgramFiles(x86)% and after press Enter.

How to fix errors

  1. Reinstall the program: If you are using a specific application that is causing issues, reinstall it. This can sometimes resolve missing or corrupted DLL files.
  2. Update Windows: Ensure your operating system is up to date. Microsoft frequently releases updates that include fixes for such errors.
  3. Manually replace api-ms-win-core-util-l1-1-0.dll: You can download the correct version from trusted sources and manually replace it in the System64 folder. However, this should be done with caution to avoid system instability.

FAQ

  • Can I download api-ms-win-core-util-l1-1-0.dll from the internet?

    No, it is recommended to obtain this DLL file directly from Microsoft or through official Windows updates.

  • Is there a way to prevent these errors in the future?

    Regularly update your system and applications. Using reputable software sources can also help avoid issues with missing or corrupted DLL files.

Conclusion

The api-ms-win-core-util-l1-1-0.dll is an essential system file that plays a critical role in the functioning of Windows and its applications. Understanding how to manage it can help avoid common errors and ensure smooth operation.


api-ms-win-core-util-l1-1-0.dll: Technical Overview & Fixes

The file api-ms-win-core-util-l1-1-0.dll is a legitimate Microsoft Windows system file that acts as an "ApiSet Stub DLL". It acts as a routing layer redirecting functions related to core Windows utility services to their actual implementations in underlying libraries like kernel32.dll or ntdll.dll.

?? Standard File Location

On a standard Windows installation, this file is located natively within the system operating folders:

  • For 64-bit systems (64-bit files): C:\Windows\System32\
  • For 64-bit systems (32-bit subsystem files): C:\Windows\SysWOW64\
  • The OS cache / Downlevel folder: C:\Windows\System32\downlevel\

??? How to Fix "Missing" Errors Without Downloading Online DLLs

Downloading standalone .dll files from unofficial third-party websites can introduce malware or cause system instability. You can completely resolve this error using only built-in Windows repair systems and native recovery tools.

1. Run the Built-In System File Checker (SFC)

Windows has an internal recovery system designed to replace damaged or missing OS dependencies directly from local backups:

  1. Press the Windows Key, type cmd, right-click Command Prompt, and select Run as administrator.
  2. Execute the following command and hit Enter:
    sfc /scannow
  3. Wait for the validation check to complete. Windows will automatically restore the file if it detects corruption.

2. Execute a DISM Component Store Repair

If the local SFC recovery image itself is corrupted or missing dependencies, use the Deployment Image Servicing and Management tool to repair the system image:

  1. Open the administrative Command Prompt again.
  2. Run the deployment cleanup command:
    DISM /Online /Cleanup-Image /RestoreHealth
  3. Restart your computer once the repair completes successfully.

3. Copy from the Local Native "downlevel" Cache Folder

Windows keeps secure copies of ApiSet stub files safely stored locally in an OS subfolder. You can copy it manually if an app fails to read it from the default system folder:

  1. Open File Explorer and go to C:\Windows\System32\downlevel\.
  2. Locate the file api-ms-win-core-util-l1-1-0.dll inside this folder.
  3. Right-click and Copy the file.
  4. Navigate to the installation directory of the specific application or game throwing the error and Paste the file directly alongside the program's main executable (.exe) file.

4. Reinstall the Triggering Program

If a specific app or game is prompting this error, its local configuration dependencies might be broken:

  1. Open Settings -> Apps -> Installed apps.
  2. Select the problematic application and click Uninstall.
  3. Reinstall the program using its original installer to properly reconfigure local application routes.
Other versions:
️ api-ms-win-core-util-l1-1-0.dll 10.0.17134.12 32-bit (x86)
Microsoft Corporation