File Extension CHM

File type: Compiled Help File

Click here to run a free instant scan for CHM related errors.

Notes about the CHM file extension:

Errors in your registry are one of the common causes for incorrect file associations on your windows system. It is highly recommended that you check your registry for file association errors (will also check for any other registry errors).

The CHM file type is primarily associated with 'HTML Help' by Microsoft Corporation. Used by HTML Help 1.x. Note: This file type can become infected and should be carefully scanned if someone sends you a file with this extension. The starting characters, ITSF, stands for InfoTech Storage File; Microsoft's name for the library that reads/writes .CHM files.

Cannot access CHM files on windows?

When windows gives you an error message saying that it
"Cannot open CHM files", this means either:

A. You need to identify a program that can open the file
B. Or your registry may be damaged

RECOMMENDED:

In both cases it is strongly recommended that you
run a free scan for registry errors.

File extension: .CHM

Detailed information for file extension CHM:

Primary association: HTML Help

Company: Microsoft Corporation

Identifying characters Hex: 49 54 53 46 , ASCII: ITSF

Program ID: chm.file

Other applications associated with file type CHM:

Ares Font Chameleon (Source Font - Font Outline)
ChemDraw (Chemical Structure) by CambridgeSoft CorporationOld format. The Mime types used with this association are: chemical/x-chemdraw, application/x-chemdraw.

'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database

Technical data

To view technical data on file-extension CHM click this link to expand/hide the additional area.

System Info for File Extension .CHM

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: chm.file, FileType: Compiled HTML Help file, AppName: Microsoft® HTML Help Executable
EXEFile: hh.exe

ProgramID: chm.file
EXEFile: C:\WINXP\hh.exe %1

ProgramID: chm.file
EXEFile: D:\WINXP\hh.exe %1

ProgramID: chm.file
EXEFile: %SystemRoot%2\hh.exe %1

ProgramID: chm.file
EXEFile: %SystemRoot%\ServicePackFiles\i386\hh.exe %1

ProgramID: chm.file
EXEFile: %SystemRoot%\system32\notepad.exe %1

ProgramID: chm.file
EXEFile: %SystemRoot%\hh.exe %1

ProgramID: chm.file
EXEFile: %SystemRoot%.1\hh.exe

ProgramID: chm.file
EXEFile: %SystemRoot%1\hh.exe

ProgramID: chm.file
EXEFile: %SystemRoot%C\hh.exe

Program Name and MIME Type Info for File Extension .CHM

FILExt has been given permission to display a Program Name/MIME type database collected by Anthony R. Nemmer. Some of this data has already been included into the main FILExt database. Those entries which have not yet been incorporated are displayed below.

Program Name Mime Type application/medhlp

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