🇬🇧 | 🇩🇪 | 🇫🇷 | 🇪🇸 | 🇨🇳 | 🇸🇦
We don't have DLL but we have:
Windows File Analyzer & Online Fast Antivirus

A minimalist interface featuring quick search, convenient uploading, and a clean section structure.

🛡️🔍 Fast verify your file, just drop on this page.
Virus check, hashes, sign verify, architecture, AI info.

api-ms-win-core-synch-l1-2-0.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-synch-l1-2-0.dll

Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA
Encryption algorithm: SHA1
Time stamp: Apr 5 06:03:50 2018 GMT
MD5: 5ed61f9d6a0645ae7d58e008a5337a6f
SHA-1: 5153eb50d292f7284ba065e62f27870b67513eab
SHA-256: a494bf8cfd5e4b4f83a6d012dade27f3dac9b3db94c426778f5b6fbf5ac05745

Where it is used

This DLL file is commonly associated with core Microsoft Windows services and applications that require synchronization capabilities. It may be utilized by various components such as:

  • The Windows operating system kernel for managing threads and processes.
  • Various system utilities and tools provided by Microsoft, like Task Manager or Event Viewer.
  • Third-party applications that need to coordinate access to shared resources.

Errors related to api-ms-win-core-synch-l1-2-0.dll

If this DLL file is missing or corrupted, you may encounter the following errors:

  • Error: api-ms-win-core-synch-l1-2-0.dll not found
  • Missing api-ms-win-core-synch-l1-2-0.dll
  • Error loading api-ms-win-core-synch-l1-2-0.dll

File security

The file is considered safe. It is a legitimate DLL provided by Microsoft and does not pose a risk of being a virus or substitute when downloaded from official sources. However, if you encounter the above-mentioned errors, it might indicate that the file has been compromised or corrupted.

api-ms-win-core-synch-l1-2-0.dll was not found
The code execution cannot proceed because api-ms-win-core-synch-l1-2-0.dll was not found
Failed to load api-ms-win-core-synch-l1-2-0.dll
The procedure entry point ... could not be located in api-ms-win-core-synch-l1-2-0.dll

1.
2a. 👉 Try to copy api-ms-win-core-synch-l1-2-0.dll C:\Program Files\Your program\
2b. Also try to copy to bin, lib folders.
2c. Try to copy api-ms-win-core-synch-l1-2-0.dll C:\Program Files (x86)\Your program\
👉 Before file replacement, ensure backups are made.
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

  • Reinstall the program: Sometimes reinstalling applications that use this DLL can resolve issues. This ensures that all associated files, including the DLL, are properly installed.
  • Update Windows: Keeping your operating system up to date with the latest patches and updates can prevent compatibility issues with certain DLLs.
  • Manually replace api-ms-win-core-synch-l1-2-0.dll: If you have a backup of this file, you can manually replace it. However, ensure that the new version is from an official source to avoid security risks.

FAQ

Q: How do I know if my api-ms-win-core-synch-l1-2-0.dll file is corrupted?

A: If you encounter error messages related to this DLL, it might be a sign that the file has been compromised or is missing. You can check for these errors using diagnostic tools in Windows.

Conclusion

The api-ms-win-core-synch-l1-2-0.dll DLL file is an essential part of the Windows ecosystem, providing synchronization functions necessary for various applications and system components. Ensuring its integrity can prevent errors and maintain a smooth user experience.


The api-ms-win-core-synch-l1-2-0.dll is a system-level Dynamic Link Library (DLL) file belonging to the Microsoft Windows Operating System. It is part of the ApiSet Stub DLLs, which bridge software applications and core Windows API functionalities.

File Description & Standard Locations

  • Description: This file manages multi-threading synchronization primitives (like mutexes, semaphores, and events) within the Windows C Runtime (CRT) Library.
  • Standard 64-bit Location: C:\Windows\System32\ (Contains 64-bit files on 64-bit Windows).
  • Standard 32-bit Location: C:\Windows\SysWOW64\ (Contains 32-bit files on 64-bit Windows).

How to Fix the Error Without Downloading the DLL File

Downloading individual DLL files from third-party websites poses a high security risk. You can completely resolve this error using built-in system tools or official installations:

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

Windows can automatically find and replace missing or corrupted system files from local system caches.

  • Right-click the Start menu and select Command Prompt (Admin) or Terminal (Admin).
  • Type sfc /scannow and press Enter.
  • Wait for the verification scan to reach 100%.
  • If errors persist, type DISM /Online /Cleanup-Image /RestoreHealth and press Enter to fix deeper system image issues.

2. Reinstall the Universal C Runtime (CRT) via Visual C++ Redistributable

This file is natively bundled within Microsoft's official system packages.

  • Open your system's Control Panel and navigate to Programs and Features.
  • Look for Microsoft Visual C++ Redistributable (2015-2022).
  • Select it and click Change, then click Repair.
  • Alternatively, run your official Windows Updates to force the OS to patch missing API sets.

3. Reinstall the Problematic Application

If the error only pops up when opening a specific game or app (like Roblox or Autodesk), the app's local binaries might be broken.

  • Uninstall the application entirely.
  • Restart your computer.
  • Install the application again using its official launcher or installation media.

If you'd like to dive deeper into why this specific error happened, please let me know:

  • What specific application or game triggers this error message?
  • Which version of Windows (e.g., Windows 10, Windows 11, or Windows 7/8) are you running?
Other versions:
️ api-ms-win-core-synch-l1-2-0.dll 10.0.17134.12 32-bit (x86)
Microsoft Corporation