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api-ms-win-core-timezone-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-timezone-l1-1-0.dll

Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA
Encryption algorithm: SHA1
Time stamp: Apr 5 06:03:51 2018 GMT

api-ms-win-core-timezone-l1-1-0.dll is a system file in Windows, specifically part of the Microsoft Windows Library. It contains functions that deal with time zone information and related operations. This DLL is crucial for certain programs to function correctly by providing necessary time zone data.

MD5: 5195bcd6a84fbf7062ef1527455c589a
SHA-1: c2bfa18fb778b55ecb3039d88ae02889de9ffa39
SHA-256: ae16d38d411eecab4c77dd4d56f6d1c6f06fd9243ee1fc2cb5c99f9e8c7d27ea

Where it is used

This file is typically associated with system-level components, such as the Windows operating system itself, and various applications that require time zone information. While not directly executable, this DLL can be indirectly involved in applications related to scheduling, calendar management, or any software needing accurate time zone handling.

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

Common issues include:

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

These errors can prevent applications from running or cause the system to behave unexpectedly.

File Security

The file is a legitimate part of Windows and is signed by Microsoft. It’s unlikely to be malicious, but any unusual behavior should be investigated. Verify its integrity using built-in tools or from known good sources.

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

1.
2a. 👉 Try to copy api-ms-win-core-timezone-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-timezone-l1-1-0.dll C:\Program Files (x86)\Your program\
👉 Make backups of the files before proceeding with replacement.
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 an application is having issues, uninstall and reinstall it. This can often resolve missing DLL errors.
  2. Update Windows: Ensure your operating system is up-to-date to receive critical updates that might fix compatibility or security issues.
  3. Manually Replace api-ms-win-core-timezone-l1-1-0.dll (Not Recommended): If you find a corrupted file, you can replace it with the original. However, this should only be done if absolutely necessary and from trusted sources. For instance, you might download it from Microsoft’s official site or use a reputable antivirus tool.

FAQ

Q: Can this file be a virus?

No, api-ms-win-core-timezone-l1-1-1.0.dll is not typically a virus. However, if you encounter an unusual error or notice any suspicious activity related to this file, consult with security software.

Conclusion

api-ms-win-core-timezone-l1-1-0.dll is a crucial system file in Windows responsible for handling time zone information. Ensuring its integrity and keeping your system updated can help avoid common issues. Always verify the source of any downloaded files to maintain the security of your system.


The file api-ms-win-core-timezone-l1-1-0.dll is a core Microsoft system component that manages time zone and date/time translation data for Windows applications. It belongs to the Universal C Runtime (CRT) Library, which acts as a bridge between your programs and the Windows operating system kernel.

?? Standard File Location

In a healthy, modern Windows environment (such as Windows 10 or Windows 11), this file is not typically found as a standalone file directly in System32. Instead, it is a virtualized "ApiSet" stub. However, physical backup and subsystem copies are located at:

  • 64-bit systems (64-bit DLLs): C:\Windows\System32\downlevel\
  • 64-bit systems (32-bit compatibility DLLs): C:\Windows\SysWOW64\downlevel\
  • 32-bit systems: C:\Windows\System32\downlevel\

??? How to Fix the Error Without Downloading the DLL From Third-Party Websites

Downloading separate DLL files from unofficial websites exposes your system to malware and rarely fixes the root issue. Use these safe, official methods instead:

1. Install or Repair Microsoft Visual C++ Redistributable

This error almost always means the program you are trying to launch cannot find the Universal CRT libraries.

  1. Navigate to the official Microsoft website and download the Visual C++ Redistributable for Visual Studio 2015–2022.
  2. Download both the x86 (32-bit) and x64 (64-bit) installers.
  3. Run both files. If they are already installed, choose the Repair option.
  4. Restart your computer.

2. Run the System File Checker (SFC)

If the file exists but has become corrupted, Windows can repair it natively.

  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. Allow the process to reach 100%. Windows will automatically replace any missing or corrupted system files.

3. Update Your Windows Operating System

On older platforms like Windows 7 or 8, this error often occurs because the Universal CRT update was never installed.

  1. Open your Settings menu or Control Panel.
  2. Go to Update & Security (or Windows Update).
  3. Click Check for updates and install all pending mandatory and optional updates.

4. Copy From the Local "Downlevel" Folder

If a specific third-party application or old game refuses to recognize the system's runtime configurations, you can copy the file locally from your own computer:

  1. Go to C:\Windows\System32\downlevel\.
  2. Locate api-ms-win-core-timezone-l1-1-0.dll.
  3. Copy the file and paste it directly into the installation folder of the program or game that is throwing the error.

If the error persists after trying these steps, let me know:

  • What operating system version are you running (e.g., Windows 7, 10, or 11)?
  • What is the exact name of the program or game that fails to launch?

Knowing these details will help pinpoint if the program requires a specific legacy update package!

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