Download iismmc.CHM to Fix Errors

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

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

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

File info

General information
Filename iismmc.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 iismmc.CHM file. iismmc.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 iismmc.CHM file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to iismmc.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 iismmc.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.

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of iismmc.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\
  • Windows XP: C:\WINDOWS\Help\

If the steps did not solve your iismmc.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 iismmc.CHM
System Windows 8
File size 58219 bytes
Date 2012-07-26
File details
MD5 6e8cd87e4139fb4d4e89d78811f53589
SHA1 bccc04e39f4a4b14606f90dd39c85cae5f524ce9
SHA256 2808abbda0078ca3af826c2b59d9aa6dcd3a2efee260c3f798fc385506815c48
CRC32 ef69262c
Example file location C:\Windows\Help\mui\0409\
Filename iismmc.CHM
System Windows 7
File size 139846 bytes
Date -0001-11-30
File details
MD5 8d918295e3e0b53ca187bc6340f98b86
SHA1 2d061992b636afe4932a453db9500a8d5b3667b8
SHA256 f69d4c62f4313beb3efb04efa9d4d2cc528b666ca2504f088fc424fce7350d10
CRC32 9c77f709
Example file location C:\Windows\Help\mui\0409\
Filename iismmc.CHM
System Windows Vista
File size 219456 bytes
Date -0001-11-30
File details
MD5 dd322f2f9dcbdf32a5183e30bc3b8d54
SHA1 02178a2d25ac1bdbce9278ffd1bafbcc465220be
SHA256 3e2f28ee0a7dbb172588b32608442d679f17d861c7729ae97125f97bbe08eaa8
CRC32 5e721c18
Example file location C:\Windows\Help\mui\0409\
Filename iismmc.CHM
System Windows XP
File size 11549 bytes
Date 2008-04-14
File details
MD5 f7657bd98df0ab31126efaeec0628af3
SHA1 bda93394f6a14150e70ecb3e7a45150e92f39a93
SHA256 7655f0939b3d0a78eaf7219435b7d792311f404c261dc27f7c6410fa4fa99eb0
CRC32 735c3707
Example file location C:\WINDOWS\Help\