How to Download and Fix api-ms-win-core-io-l1-1-1.dll?

Sometimes Windows system displays error messages regarding corrupted or missing api-ms-win-core-io-l1-1-1.dll files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent api-ms-win-core-io-l1-1-1.dll file can therefore effect in failed execution of the started process.

api-ms-win-core-io-l1-1-1.dll file ApiSet Stub DLL. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of api-ms-win-core-io-l1-1-1.dll related errors on your device. You can also download api-ms-win-core-io-l1-1-1.dll file compatible with Windows 10, Windows 8.1, Windows 8.1, Windows 8 devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8.1, Windows 8

File info

General information
Filename api-ms-win-core-io-l1-1-1.dll
File extension DLL
Description ApiSet Stub DLL
Software
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
Details
MIME type application/octet-stream
File type Dynamic link library
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)
Fix File Errors

There are various types of errors related to api-ms-win-core-io-l1-1-1.dll file. api-ms-win-core-io-l1-1-1.dll file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to api-ms-win-core-io-l1-1-1.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

  • api-ms-win-core-io-l1-1-1.dll is corrupted
  • api-ms-win-core-io-l1-1-1.dll cannot be located
  • Runtime Error - api-ms-win-core-io-l1-1-1.dll
  • api-ms-win-core-io-l1-1-1.dll file error
  • api-ms-win-core-io-l1-1-1.dll file cannot be loaded. Module was not found
  • cannot register api-ms-win-core-io-l1-1-1.dll file:
  • api-ms-win-core-io-l1-1-1.dll file could not be loaded
  • api-ms-win-core-io-l1-1-1.dll file doesn't exist

api-ms-win-core-io-l1-1-1.dll

Error

Application could not be started because api-ms-win-core-io-l1-1-1.dll file is missing. Reinstall the application to solve the problem.

OK

Problems related to api-ms-win-core-io-l1-1-1.dll can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing api-ms-win-core-io-l1-1-1.dll file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

api-ms-win-core-io-l1-1-1.dll file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with api-ms-win-core-io-l1-1-1.dll file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to api-ms-win-core-io-l1-1-1.dll file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of api-ms-win-core-io-l1-1-1.dll or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to api-ms-win-core-io-l1-1-1.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the api-ms-win-core-io-l1-1-1.dll file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the api-ms-win-core-io-l1-1-1.dll file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the api-ms-win-core-io-l1-1-1.dll file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace api-ms-win-core-io-l1-1-1.dll file

The last solution is to manually download and replace api-ms-win-core-io-l1-1-1.dll file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded api-ms-win-core-io-l1-1-1.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of api-ms-win-core-io-l1-1-1.dll file example directory paths.

  • Windows 10: C:\Windows\System32\downlevel\
  • Windows 8.1: C:\Windows\System32\downlevel\
  • Windows 8.1: C:\Windows\System32\downlevel\
  • Windows 8: 1: C:\Windows\System32\downlevel\

If the steps did not solve your api-ms-win-core-io-l1-1-1.dll file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename api-ms-win-core-io-l1-1-1.dll
System Windows 10
File size 10656 bytes
Date 2017-03-18
File details
MD5 9bd058fab50483749d6aba873e55fddf
SHA1 e203273306d53757f42babb8aadd23877d69077c
SHA256 9781b0afa63008d6d76de9ddb065bed4b26503dbffe47d5faa36932ceccd7ce5
CRC32 54072dc1
Example file location C:\Windows\System32\downlevel\
Filename api-ms-win-core-io-l1-1-1.dll
System Windows 8.1
File size 2560 bytes
Date -0001-11-30
File details
MD5 033642533392e005415fe17af6ba6a2e
SHA1 92fb73428d2ef1ab3017a7687a8a274612bbf937
SHA256 20476b4285f9a85fadd829d18ef6cfade938a37782b7aa65b4b1d9a079871fca
CRC32 ef1b2ccd
Example file location C:\Windows\System32\downlevel\
Filename api-ms-win-core-io-l1-1-1.dll
System Windows 8.1
File size 3072 bytes
Date 2013-08-22
File details
MD5 367bc8e3d1edefb1182d2764e4727194
SHA1 7afbf0ae8d2d4066adae3f7cdb0752ef3ecabdd5
SHA256 10f8dafe3d2c18e67e7d38b65e508bdbf6f7769afb5d92e70a67dea06b1a4b01
CRC32 b3c3d810
Example file location C:\Windows\System32\downlevel\
Filename api-ms-win-core-io-l1-1-1.dll
System Windows 8
File size 3072 bytes
Date 2012-07-26
File details
MD5 6393b23cb834a2bb3e3b78a640f3c189
SHA1 60ed3f0c7ca635d3501e3895df299233d06db3b4
SHA256 95cf7a5eba44577ccdc00de653db52c0287ce99b033a5b5121231923e9cff943
CRC32 31d37647
Example file location 1: C:\Windows\System32\downlevel\