File Extension Library


.H1W File Extension

  • Developer by: Microsoft Corporation
  • Category: Various data Files

What are .H1W files and how to open them?

Can't open .H1W file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .H1W file.

What is a .H1W file extension?

.H1W file extension is created by Microsoft Corporation. .H1W has been classified as Various data Files.

.H1W is Microsoft Windows Help keyword index

The h1w file extension is associated with the Microsoft Windows Help, a help document authoring tool for Microsoft Windows operating system.

The h1w file stores keyword index created by Microsoft Windows Help.


How to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

How to fix problems with .H1W files

  1. You need to update the application that you normally use to open .H1W files. Only the latest version of the software supports the current .H1W file format
  2. You need to check the .H1W file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)