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api-ms-win-core-heap-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: 19.4 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-heap-l1-1-0.dll

Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA
Encryption algorithm: SHA1
Time stamp: Apr 5 06:03:42 2018 GMT
MD5: 3b2f316ad37a2dd98a982c90e7543514
SHA-1: 30392487718ce0a8283ac342600faf693030f7b6
SHA-256: 197ae90682ac3b6fb6dcdbda1dc099a414250e5740fe9c96f7969d4c4a810a03

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

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

File Security

The file "api-ms-win-core-heap-l1-1-0.dll" is safe and trusted as part of the Windows operating system. It is not a virus or malware; however, if you encounter an unexpected error related to this DLL, it could indicate that your system might be compromised.

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

1.
2a. 👉 Try to copy api-ms-win-core-heap-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-heap-l1-1-0.dll C:\Program Files (x86)\Your program\
👉 Always create a backup before replacing 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 a specific application is causing issues, reinstalling it may resolve the error. Some programs rely on this DLL and may not function correctly if the file is missing or corrupted.
  2. Update Windows: Ensure that your operating system is up to date. Microsoft regularly releases updates that include security patches and bug fixes for various components, including DLL files.
  3. Manually Replace api-ms-win-core-heap-l1-1-0.dll (Not Recommended): Download the file from a trusted source and replace it in the system directory. However, this should only be done as a last resort after ensuring that the file is secure.

Frequently Asked Questions (FAQ)

Q: Can I download api-ms-win-core-heap-l1-1-0.dll?

A: While you can manually replace the file, it is recommended to rely on Windows updates for system files.

Conclusion

The "api-ms-win-core-heap-l1-1-0.dll" file plays an essential role in the management of heap memory within Windows. Regular updates and proper maintenance can help avoid common errors associated with this DLL.


File Description

api-ms-win-core-heap-l1-1-0.dll is an official Windows API-set stub library. It serves as a router to forward memory heap management functions—such as allocating, destroying, or sizing memory blocks—to core operating system binaries like ntdll.dll or kernelbase.dll. It is a critical component of the Universal C Runtime (UCRT) and modern Windows application architecture.

Standard File Location

The file is natively stored in the following directory paths based on your system architecture:

  • 64-bit Windows:
    • C:\Windows\System32 (Contains the 64-bit version of the file)
    • C:\Windows\SysWOW64 (Contains the 32-bit version for backward compatibility)
  • 32-bit Windows:
    • C:\Windows\System32 (Contains the 32-bit version of the file)

How to Fix the Error Without Downloading the File

Downloading individual DLL files from unofficial third-party websites can expose your computer to malware or cause version mismatch crashes. Use these safe, built-in alternatives instead:

1. Run SFC and DISM Commands

Windows has built-in diagnostic tools designed to scan and automatically replace missing or corrupt system files.

  1. Press the Windows Key, type cmd, right-click Command Prompt, and select Run as administrator.
  2. Paste the following command and press Enter to scan the local image:
    DISM.exe /Online /Cleanup-image /Restorehealth
  3. Once completed, type this command and press Enter to repair the system files:
    sfc /scannow
  4. Restart your computer.

2. Install or Repair Microsoft Visual C++ Redistributables

Because this DLL is heavily tied to the C Runtime framework, a missing or broken runtime installation is the most common cause of the error.

  1. Navigate to the official Microsoft Visual C++ downloads page.
  2. Download the Visual Studio 2015, 2017, 2019, and 2022 architecture packages (vc redist.x86.exe for 32-bit apps and vc redist.x64.exe for 64-bit systems).
  3. Run the installer. If it is already installed, click Repair; otherwise, click Install.
  4. Restart your PC.

3. Run a Windows Update

Microsoft delivers API-set updates and critical UCRT patches directly through operating system updates.

  1. Open Settings (Press Win + I).
  2. Go to Update & Security (or Windows Update).
  3. Click Check for updates.
  4. Download and install all pending quality and feature updates, then reboot your system.

4. Reinstall the Flagged Program

If the error occurs only when launching a specific program or game, that software's local files may be corrupted or it may require a local runtime dependency.

  1. Open Control Panel and click Uninstall a program.
  2. Locate the problematic software, right-click it, and select Uninstall.
  3. Reinstall the application using its official installer, which frequently patches local missing dependencies automatically.

If you are still experiencing issues, please share the name of the program triggering the error and your Windows operating system version so we can look for specific application patches.

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