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How to open .HXK file extension?

File Type : Help 2 Keyword Index (Microsoft Corporation)
Compatible with (WinXP,Vista,Win7,Win8 and Win10)

Looking for a program to open .HXK files?

"Windows unable to open a file!" is probably the most common error faced by millions every day. This is either because the program required to open a file is not available on your system or there may be other issues.

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What is .HXK file extension?

.HXK file extension is a known file type. This section of tells you everything you need to know about this extension.
File used by Microsoft Help 2.x projects; specifies information about how a help index is organized; often used for keyword, context-sensitive, and other help indexes defined in the .HXS help documentation bundle. NOTE: Older versions of Visual Studio, including 2005 and 2008, used Microsoft Help 2.x as the standard help format. However, Visual Studio 2010 and later no longer support Microsoft Help 2.x.
You can see a list of software programs here on that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.

Software that can be used to open .HXK files:

Microsoft Windows:
  • Innovasys HelpStudio