XD440P_A.CHM - Repair Issues and Download

Sometimes Windows system displays error messages regarding corrupted or missing XD440P_A.CHM 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 XD440P_A.CHM file can therefore effect in failed execution of the started process.

XD440P_A.CHM file Compiled HTML Help. The file was developed by Microsoft for use with Windows software. Here you will find detailed information about the file and instructions how to proceed in the event of XD440P_A.CHM related errors on your device. You can also download XD440P_A.CHM file compatible with Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows Vista

File info

General information
Filename XD440P_A.CHM
File extension CHM
Type Compiled HTML Help
Description Compiled HTML Help
Program Windows Vista
Software Windows
Author Microsoft
Software version Vista
MIME type application/x-chm
Language cod English (U.S.)

There are various types of errors related to XD440P_A.CHM file. XD440P_A.CHM 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 XD440P_A.CHM file. If you encounter one listed below (or similar), please consider the following suggestions.

  • XD440P_A.CHM is corrupted
  • XD440P_A.CHM cannot be located
  • Runtime Error - XD440P_A.CHM
  • XD440P_A.CHM file error
  • XD440P_A.CHM file cannot be loaded. Module was not found
  • cannot register XD440P_A.CHM file:
  • XD440P_A.CHM file could not be loaded
  • XD440P_A.CHM file doesn't exist



Application could not be started because XD440P_A.CHM file is missing. Reinstall the application to solve the problem.


Problems related to XD440P_A.CHM 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 XD440P_A.CHM 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.

XD440P_A.CHM 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 XD440P_A.CHM 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 XD440P_A.CHM 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 XD440P_A.CHM 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 XD440P_A.CHM file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the XD440P_A.CHM 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 XD440P_A.CHM 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 XD440P_A.CHM 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 XD440P_A.CHM file

The last solution is to manually download and replace XD440P_A.CHM 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 XD440P_A.CHM file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of XD440P_A.CHM file example directory paths.

  • Windows Vista: C:\Windows\System32\spool\drivers\x64\3\mui\0409\

If the steps did not solve your XD440P_A.CHM 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 XD440P_A.CHM
System Windows Vista
File size 139549 bytes
Date 2006-09-18
File details
MD5 01249ba91f3a461fbf2d3b501ee18b64
SHA1 252dab087f1962c4abeeb2d275577e0272fffac4
SHA256 ba6ebf0a805806379dc6976c1fc8a27fc932e0ad2db05541a146302194e61882
CRC32 9e86f69c
Example file location C:\Windows\System32\spool\drivers\x64\3\mui\0409\