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

★★★★★ Verified File (27.08.2026)

Description


Creation date: 20.11.2015 06:52:50
File version: 10.0.10586.15
Antivirus scan: ✅ OK
Category: System
File size: 22.4 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-file-l1-1-0.dll

Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA
Encryption algorithm: SHA1
Time stamp: Apr 5 06:03:42 2018 GMT

api-ms-win-core-file-l1-1-0.dll is a System DLL file for Windows. It's part of the Microsoft Windows Runtime library and plays a crucial role in various system functions related to file operations, including creation, deletion, and manipulation.

MD5: 588ad6f1e371120cb4d379bd167f27e8
SHA-1: b4019999784ec0093b94f15a2895403581362268
SHA-256: 27bd2248a554d4b1ca8efe80889c7c6ec8e454e486cfbf4463122e9d2a4dbee6

Where it is Used

This DLL file is commonly used by several core components of Windows, such as the File Explorer, command-line utilities like `cmd.exe`, and applications that require low-level file operations. It provides essential functionalities for handling file paths, attributes, and time-related functions.

Errors Related to api-ms-win-core-file-l1-1-0.dll

The most common errors related to this DLL include:

  • "api-ms-win-core-file-l1-1-0.dll not found"
  • "missing api-ms-win-core-file-l1-1-0.dll"
  • "error loading api-ms-win-core-file-l1-1-0.dll"
These errors can occur due to various reasons, such as missing or corrupted DLL files, system file integrity issues, or conflicts with other software.

File Security

The file characteristics indicate that it is a high-entropy virtual address space (HighEntropyVA) relocatable NX-compatible 64-bit DLL. These attributes suggest that the file is likely safe and not a virus. However, if you encounter unexpected behavior or errors related to this file, ensure that your system files are up to date by running Windows Update.

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

1.
2a. 👉 Try to copy api-ms-win-core-file-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-file-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 a specific program is causing an issue with this DLL, reinstalling the application might resolve the problem. This can be done through the Control Panel or using the program's setup file.
  2. Update Windows: Ensure that your operating system is up to date by running Windows Update. This will help ensure all system files are current and consistent.
  3. Manually Replace api-ms-win-core-file-l1-1-0.dll: If the file is corrupted, you can download a fresh copy from trusted sources or use System File Checker (SFC) to repair it. To do this:
    1. Open Command Prompt as Administrator.
    2. Type sfc /scannow and press Enter.
    3. If the issue persists, download a fresh copy from trusted Microsoft sources and replace the file using File Explorer or another tool.

FAQ

  • Q: Can this file be a virus?

    • No, based on the characteristics and typical usage, api-ms-win-core-file-l1-1-0.dll is not likely to be a virus. However, if you are unsure or encounter unexpected behavior, consult with IT professionals.

Conclusion

api-ms-win-core-file-l1-1-0.dll is an essential DLL file for Windows systems. Understanding its role and how to address issues related to it can help maintain system stability and performance.


The file api-ms-win-core-file-l1-1-0.dll is a core Microsoft Windows system file that serves as an API set stub for the Universal C Runtime (UCRT), managing essential file system operations and application routing. It is primarily used by modern applications and games to communicate with the Windows operating system core kernel.

Standard File Location

Depending on your operating system architecture, this file resides in the following system directories:

  • 64-bit Windows (for 64-bit files): C:\Windows\System32
  • 64-bit Windows (for 32-bit compatibility files): C:\Windows\SysWOW64
  • 32-bit Windows: C:\Windows\System32

How to Fix the Error Without Downloading the DLL File

Downloading standalone DLL files from third-party websites exposes your PC to malware and version conflicts. Use these official methods to safely repair the error:

1. Run the System File Checker (SFC) and DISM

Windows can automatically find and replace missing or corrupted system files from official Microsoft repositories.

  1. Press the Windows Key, type cmd, right-click Command Prompt, and select Run as administrator.
  2. Type the following command and press Enter:
    sfc /scannow
  3. Wait for the scan to hit 100%. If it repairs files, restart your PC.
  4. If the issue persists, run the deployment repair tool by typing:
    DISM.exe /Online /Cleanup-image /Restorehealth

2. Reinstall the Microsoft Visual C++ Redistributable

This file belongs to the C Runtime environment. Reinstalling the official package restores the entire family of API stubs.

  1. Go to the official Microsoft Visual C++ downloads page.
  2. Download the latest installers for your architecture (both vc redist.x86.exe and vc redist.x64.exe are recommended for 64-bit systems).
  3. Run the installers, choose Repair (or Install if missing), and restart your computer.

3. Update Your Windows Operating System

Older operating systems like Windows 7 or unpatched versions of Windows 10/11 frequently throw this error when attempting to launch newer software.

  1. Open Settings (Win + I).
  2. Navigate to Windows Update (or Update & Security).
  3. Click Check for updates and install all critical packages.

4. Copy from the Windows Downlevel Folder

Windows keeps a secure backup of API-ms stub files inside its native directory structure.

  1. Open File Explorer and navigate to: C:\Windows\System32\downlevel
  2. Locate api-ms-win-core-file-l1-1-0.dll inside this folder.
  3. Copy the file and paste it directly into the installation folder of the specific application or game that is failing to launch.

5. Reinstall the Impacted Application

If a specific program is corrupted, its local dependencies can trigger the missing DLL prompt. Uninstall the program completely, restart your device, and install it fresh using the original source package.

If you need further help, please share the exact name of the app or game triggering this error and your current Windows version so we can tailor a specific solution.

Other versions:
️ api-ms-win-core-file-l1-1-0.dll 10.0.17134.12 32-bit (x86)
Microsoft Corporation