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api-ms-win-crt-stdio-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: 24.9 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-crt-stdio-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-stdio-l1-1-0.dll is a dynamic link library (DLL) that plays an essential role in the Windows operating system. DLLs are reusable pieces of code that provide functionality for multiple applications, allowing them to share common resources.

MD5: 2fd5d83f6ab57aaae084ff2a7c6feaf1
SHA-1: 3628825767abfd4b99a4cbdbe1779b3ed865883c
SHA-256: 7160de25bf16bfd2a0718293153e5a8c5eb847915f5c79c991c5a7026fa3c37e

Where it is used

This particular DLL contains standard input/output (stdio) functions such as reading from and writing to the console. It's part of Microsoft's runtime library (CRT) and is crucial for many built-in Windows components, including command-line tools like `cmd` or `PowerShell`, and various applications that require file I/O operations.

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

If the api-ms-win-crt-stdio-l1-1-0.dll is missing or corrupted, you may encounter errors such as:

  • "api-ms-win-crt-stdio-l1-1-0.dll not found"
  • "missing api-ms-win-crt-stdio-l1-1-0.dll"
  • "error loading api-ms-win-crt-stdio-l1-1-0.dll"

File security

The file api-ms-win-crt-stdio-l1-1-1-0.dll is part of the Windows operating system and is considered safe. However, if you encounter a missing or corrupt version, it could indicate that your system has been compromised. Always ensure that you download replacements from trusted sources.

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

1.
2a. 👉 Try to copy api-ms-win-crt-stdio-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-stdio-l1-1-0.dll C:\Program Files (x86)\Your program\
👉 Do not replace the files without first making backups.
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 problem by replacing any corrupted DLLs.
  2. Update Windows: Ensuring that your Windows version is up to date can help as newer versions often include security updates and bug fixes for system files.
  3. Manually replace api-ms-win-crt-stdio-l1-1-0.dll: You can download a fresh copy of this DLL from the official Microsoft website or reputable third-party sources. Ensure that you follow instructions carefully to avoid corrupting other system files.

FAQ

  • Q: Is api-ms-win-crt-stdio-l1-1-0.dll safe?

    A: The file is part of the Windows operating system and is considered safe. Missing or corrupt versions can indicate a potential issue, so always ensure your system is up to date.

  • Q: How do I replace api-ms-win-crt-stdio-l1-1-0.dll?

    A: Download the file from trusted sources and manually replace it in the System64 folder. Follow instructions carefully to avoid system issues.

Conclusion

The DLL file api-ms-win-crt-stdio-l1-1-0.dll is an essential part of the Windows operating system. Properly managing and maintaining this file can help avoid common errors and ensure smooth operation of your applications.


api-ms-win-crt-stdio-l1-1-0.dll File Guide & Fixes

Description of the File

The api-ms-win-crt-stdio-l1-1-0.dll file is a core operating system component belonging to the Microsoft Universal Cathode Ray Tube (CRT) or Universal C Runtime (UCRT). It functions as a dynamic link library responsible for standard input and output stream operations (stdio) for applications developed in C and C++ using Microsoft Visual Studio. When an application throws an error stating this file is missing, it means the app cannot communicate with standard Windows data streams.

Standard File Location

Depending on your Windows architecture, this system file resides in the following default system folders:

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

How to Fix the Error Without Downloading the DLL From 3rd-Party Sites

Downloading single DLL files from untrusted third-party websites can expose your computer to malware or compatibility crashes. Instead, you can recover this native Windows file using secure, built-in system repairs or official framework updates.

Method 1: Repair the Visual C++ Redistributable Package

The easiest way to restore the missing library is to trigger a self-repair of the Microsoft library package that houses it.

  1. Press Windows Key + R to open the Run dialog box.
  2. Type appwiz.cpl and hit Enter to open Programs and Features.
  3. Scroll down the list to locate Microsoft Visual C++ 2015-2022 Redistributable (both x86 and x64 versions if applicable).
  4. Right-click the installation file and select Change (or Modify).
  5. Click the Repair button in the pop-up window.
  6. Follow the on-screen prompts, then restart your computer.

Method 2: Copy from the "Downlevel" Backup Directory

Windows keeps an official local cache of Universal CRT DLL files inside the operating system directory that you can copy into your software folder manually.

  1. Open File Explorer and navigate to: C:\Windows\System32\downlevel
  2. Type api-ms-win-crt-stdio-l1-1-0.dll in the folder search bar.
  3. If found, right-click the file and select Copy.
  4. Navigate to the installation directory of the software or game that is throwing the error.
  5. Right-click inside that program's folder and select Paste.

Method 3: Run Built-in System File Checker (SFC)

If the DLL is corrupted or missing due to a disk or deployment error, Windows can restore it automatically via the Command Prompt.

  1. Open the Windows Start menu, type cmd, right-click Command Prompt, and select Run as administrator.
  2. Execute the following command and hit Enter:
    sfc /scannow
  3. Wait for the verification to reach 100%. If Windows finds damaged architecture files, it will extract a clean copy of the DLL automatically from its recovery image.
  4. Restart your system.

Method 4: Run Windows Update

Because the Universal CRT is delivered as an operating system feature update, keeping your system updated will push missing base libraries back onto the PC.

  1. Open Settings (Windows Key + I) and select Update & Security (or Windows Update).
  2. Click Check for updates.
  3. Install all pending cumulative and feature updates.
  4. Reboot your system and verify if the issue resolves.
Other versions:
️ api-ms-win-crt-stdio-l1-1-0.dll 10.0.17134.12 32-bit (x86)
Microsoft Corporation