A daily updated filename extension database!

H1W file extension

The table below provides useful information about the .h1w file extension. It answers questions such as:

  • What is the .h1w file?
  • What program do I need to open a .h1w file?
  • How can the .h1w file be opened, edited or printed?
  • How can I convert .h1w files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Microsoft Help Merged Keyword Index

H1W file is a Microsoft Help Merged Keyword Index. Microsoft Help is a system assistance program included with Microsoft Windows.
H1W format description not yet available
Category: Data files
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
H1W aliases:
H1W related links:
H1W related extensions:
Windows Help File

Windows Help Project

Microsoft Help Collection Definition

Microsoft Help Topic Definition

Microsoft Help Keywords Index

Microsoft Help VTopic Definition

Microsoft Help Compiled Help Data

Windows Help Project

Microsoft Help Validator File

Microsoft Help Merged Hierarchy File

Other types of files may also use the .h1w file extension.

🚫 The .h1w file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

g1w, h1d, h1q, h1s, hlw, hw

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Hioki Logger Communicator Waveform Data
Casio fx-9860G SDK Project
Microsoft Help Validator File
Microsoft Help Merged Query Index
Microsoft Help Compiled Help Data
Marvelous Designer Hardware ID Data

🔴 Can't open a .h1w file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .h1w file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .h1w file extension, write to us!

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Browser: Abbreviation Application Archive Audio Configuration Data Development Disk Image Document Ebook Font Game Data GIS Graphic Malware Multimedia Other Project Scam Unknown Video
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