Download nap.CHM to Fix Errors

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

nap.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 nap.CHM related errors on your device. You can also download nap.CHM file compatible with Windows 8, Windows 7, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 8, Windows 7, Windows Vista

File info

General information
Filename nap.CHM
File extension CHM
Type Compiled HTML Help
Description Compiled HTML Help
Program Windows 8
Software Windows
Author Microsoft
Software version 8
MIME type application/x-chm
Language cod English (U.S.)

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

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



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


Problems related to nap.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 nap.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.

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

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

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

  • Windows 8: C:\Windows\Help\mui\0409\
  • Windows 7: C:\Windows\Help\mui\0409\
  • Windows Vista: C:\Windows\Help\mui\0409\

If the steps did not solve your nap.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 nap.CHM
System Windows 8
File size 30278 bytes
Date 2012-07-26
File details
MD5 1bc2f5885cd3b03ba5f4d3f54cc4a20d
SHA1 2e0e228ff43ab294f50f9f5b064d30d283dc36a1
SHA256 44c5d497e27d61766359dc88371ee104c822b589b917e770e832723634dc5356
CRC32 3a296a9b
Example file location C:\Windows\Help\mui\0409\
Filename nap.CHM
System Windows 7
File size 79093 bytes
Date -0001-11-30
File details
MD5 6eef9710f16b3ec90ee55c82f2869d0a
SHA1 02194bc27a449fa9725d53c8774f077a218a1c1f
SHA256 9fb7f5960440e05f4d6bc575c893ed3552dcb62663cc0f1385ece4f1fcce6254
CRC32 2d2b4035
Example file location C:\Windows\Help\mui\0409\
Filename nap.CHM
System Windows Vista
File size 60323 bytes
Date -0001-11-30
File details
MD5 7b6f0b4eb607d39f23ba17efe07d6822
SHA1 bcc4f3340246df9b10eebe50e8ee53ca5b432e33
SHA256 eac026d9a6ede2b08af8a7d435537ed4b264013cf8b904706548e05ed02620c2
CRC32 24352ee7
Example file location C:\Windows\Help\mui\0409\