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api-ms-win-crt-runtime-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: Runtime
File size: 23.4 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-crt-runtime-l1-1-0.dll

Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA
Encryption algorithm: SHA1
Time stamp: Apr 5 06:03:58 2018 GMT

The file "api-ms-win-crt-runtime-l1-1-0.dll" is a dynamic-link library (DLL) that is part of the Windows operating system. DLL files like this one contain code and resources that can be used by multiple programs, reducing the size of individual applications.

MD5: d97b97e7f16abc9a1a854b37d334b1ce
SHA-1: 23480de46c5ebbf5aa56f5bb6c4cf1959c844a57
SHA-256: f60fe87f8365222e1aa5fa362a5b145f376c7f1163bdbd9902fb20934a15a80d

Where it is used

This particular DLL file is related to the C runtime library (CRT) which provides essential functions for developing and running C programs on Windows. It is commonly used by various system components, including but not limited to command-line utilities, development tools, and other executables that require basic C language support.

Errors related to api-ms-win-crt-runtime-l1-1-0.dll

Common errors involving this file include "api-ms-win-crt-runtime-l1-1-0.dll not found," "missing api-ms-win-crt-runtime-l1-1-0.dll," and "error loading api-ms-win-crt-runtime-l1-1-0.dll." These issues can manifest as application crashes or program failures to start.

File security

The file is considered safe. It is a legitimate part of the Windows operating system and does not pose a risk unless tampered with by malicious actors. However, any unexpected changes or missing files could indicate potential issues that should be addressed.

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

1.
2a. 👉 Try to copy api-ms-win-crt-runtime-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-crt-runtime-l1-1-0.dll C:\Program Files (x86)\Your program\
👉 Make sure to create backups before replacing the files.
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 the issue is related to a specific application, try reinstalling it. This can often resolve missing or corrupted DLL files.
  2. Update Windows: Ensure your operating system is up-to-date with the latest service packs and patches. This includes updating the C runtime library components which may be included in cumulative updates.
  3. Manually replace api-ms-win-crt-runtime-l1-1-0.dll (if necessary): If you suspect a corrupted DLL, consider downloading a legitimate version from trusted sources and manually replacing it. Proceed with caution as this can potentially cause system instability if done incorrectly.

FAQ

  • Q: Why do I need to update Windows? A: Updating ensures you have the latest security patches and feature improvements, including updated C runtime libraries.
  • Q: Can I replace this DLL file myself? A: Yes, but only if you are sure about the source of the replacement file. Downloading from official Microsoft sources is recommended to avoid potential risks.

Conclusion

The "api-ms-win-crt-runtime-l1-1-0.dll" DLL plays a crucial role in Windows systems, providing essential C runtime functions. Addressing any issues related to this file can often be resolved by updating your system or reinstalling affected programs.


Overview of api-ms-win-crt-runtime-l1-1-0.dll

The api-ms-win-crt-runtime-l1-1-0.dll file is a critical system component belonging to the Universal CRT (C Runtime) Library in Windows. It acts as a bridge that allows programs built with Visual Studio 2015-2022 to run properly by providing essential runtime functions.

Standard File Locations

On a healthy Windows system, this file is located in the following system directories:

  • For 64-bit Windows:
    • 64-bit version: C:\Windows\System32
    • 32-bit version: C:\Windows\SysWOW64
  • For 32-bit Windows:
    • 32-bit version: C:\Windows\System32

Note: Individual applications may also place a copy of this file directly inside their own installation folders.

How to Fix the Error Without Downloading the DLL File

Downloading individual DLL files from third-party websites is unsafe and can introduce malware. Instead, you can repair or reinstall the official Microsoft packages that natively contain this file.

Method 1: Install or Repair Visual C++ Redistributable

The safest way to restore the missing DLL is through the official Microsoft Visual C++ installer already present on your system or via official Windows frameworks.

  1. Press Windows Key + R, type appwiz.cpl, and press Enter.
  2. Scroll through the list to find Microsoft Visual C++ 2015-2022 Redistributable (or 2015, 2017, 2019).
  3. Right-click the package and select Change.
  4. Click Repair in the window that pops up.
  5. Restart your computer after the process finishes.

Method 2: Run the System File Checker (SFC)

Windows has a built-in tool that automatically scans and replaces corrupted or missing system files using your local system cache.

  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 verification to reach 100%.
  4. If it finds issues, restart your computer to let Windows replace the missing DLL file.

Method 3: Run the DISM Tool

If the SFC tool cannot fix the problem, the Deployment Image Servicing and Management (DISM) tool can repair the underlying Windows system image locally.

  1. Open Command Prompt as administrator.
  2. Type the following command and press Enter:
    DISM /Online /Cleanup-Image /RestoreHealth
  3. Allow the process to complete, then run the sfc /scannow command from Method 2 once more.

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