Download apprepapi.dll to Fix Errors

Sometimes Windows system displays error messages regarding corrupted or missing apprepapi.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 apprepapi.dll file can therefore effect in failed execution of the started process.

apprepapi.dll file Application Reputation APIs 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 apprepapi.dll related errors on your device. You can also download apprepapi.dll file compatible with Windows 10, 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

File info

General information
Filename apprepapi.dll
File extension DLL
Description Application Reputation APIs Dll
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
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.)

There are various types of errors related to apprepapi.dll file. apprepapi.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 apprepapi.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

  • apprepapi.dll is corrupted
  • apprepapi.dll cannot be located
  • Runtime Error - apprepapi.dll
  • apprepapi.dll file error
  • apprepapi.dll file cannot be loaded. Module was not found
  • cannot register apprepapi.dll file:
  • apprepapi.dll file could not be loaded
  • apprepapi.dll file doesn't exist



Application could not be started because apprepapi.dll file is missing. Reinstall the application to solve the problem.


Problems related to apprepapi.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 apprepapi.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.

apprepapi.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 apprepapi.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 apprepapi.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 apprepapi.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 apprepapi.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the apprepapi.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 apprepapi.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 apprepapi.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 apprepapi.dll file

The last solution is to manually download and replace apprepapi.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 apprepapi.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of apprepapi.dll file example directory paths.

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

If the steps did not solve your apprepapi.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 apprepapi.dll
System Windows 10
File size 10752 bytes
Date 2017-03-18
File details
MD5 dd3fe494602dadbefb86cbc32defe648
SHA1 1109e55af1b6112736d3c61c28524ce619e18c9d
SHA256 3e8aa9a9c99ff24c025260a01de313b73fad9c0a093694b2ec383bd1c683d41e
CRC32 1c37a448
Example file location C:\Windows\System32\
Filename apprepapi.dll
System Windows 8.1
File size 133632 bytes
Date 2014-11-21
File details
MD5 cb28fe372a0dc085c59cf20d38a4ebf9
SHA1 e819cbb318dfad972985d59c95d5b235d69273b2
SHA256 a28ba9bddf62b4479846705d99986ac19d541006ceaa966efb0bc41ad9de379c
CRC32 03f593c1
Example file location C:\Windows\System32\
Filename apprepapi.dll
System Windows 8
File size 87040 bytes
Date 2012-07-26
File details
MD5 7fd71f0be1b00e6e225ea29573ddbd87
SHA1 121dc4fe38b62846eff2c4e02fbd5884371799a3
SHA256 98d709033c558e0bd23559352d6be714fb4bc87065b80dc1ab6342d469690e34
CRC32 091c949f
Example file location 1: C:\Windows\System32\