Troubleshoot ACW.exe Errors and Download File

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

ACW.exe file Microsoft Guided Help. 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 ACW.exe related errors on your device. You can also download ACW.exe file compatible with Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows Vista, Windows Vista

File info

General information
Filename ACW.exe
File extension EXE
Description Microsoft Guided Help
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 ACW.exe file. ACW.exe 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 ACW.exe file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to ACW.exe 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 ACW.exe 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.

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

The last solution is to manually download and replace ACW.exe 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 ACW.exe file.

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

  • Windows Vista: C:\Windows\SysWOW64\
  • Windows Vista: C:\Windows\SysWOW64\

If the steps did not solve your ACW.exe 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 ACW.exe
System Windows Vista
File size 81408 bytes
Date -0001-11-30
File details
MD5 f34702e751418e7261b94b23d54c0e24
SHA1 a260654989a90c9739e4969e4c0016209bbeb872
SHA256 2d04c21b43fa8563387761060ed19a10606916bfc1fc40fdb72b1c2e2b9209df
CRC32 b063e629
Example file location C:\Windows\SysWOW64\
Filename ACW.exe
System Windows Vista
File size 91648 bytes
Date 2008-01-21
File details
MD5 f6d5f816fd0c445eb24380de48a74f13
SHA1 35e103bc0b3b8a8365f5d0182e9af4bdf38aee59
SHA256 7f946a4fa2e98eae2c6af38ad228eb49081288cdc540b64fefbc8857baf470b8
CRC32 93758c07
Example file location C:\Windows\SysWOW64\