What is the HPJ File Extension?

By:   |   Amended: November 26, 2018

Microsoft Silver

HPJ File Summary

There is one file type associated with the HPJ File Extension, the Help Project File format. According to our database, two distinct software programs (conventionally, Adobe RoboHelp developed by Adobe Systems Incorporated) will enable you to view these files. HPJ files are traditionally categorized as System Files.

We have found HPJ files on the Windows and Mac operating systems. They are both mobile and desktop device friendly. The Popularity Rating for HPJ files is "Low", which means these files are not ordinarily found on an everyday user's device.

To learn more about HPJ files and their associated software applications, please see the information below. Plus, we provide a basic troubleshooting guide to solve problems with opening HPJ files.

Low
Popular
8198
Ranking

/ 11690

Active

Importance

26

November

2018

Amended

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Varieties of HPJ Files


Primary HPJ File Association

.HPJ
Formatting:.hpj
Class:Help Project File

An HPJ file is used for creating program Help documentation. It contains information for defining the behavior, look, and content of the Help system.

Programmer: Microsoft Corporation
Kind:System Files
Location: HKEY_CLASSES_ROOT\.hpj

Software Programs That Open The Help Project File:


Adobe RoboHelp by Adobe Systems Incorporated

Windows
Mac

Microsoft Windows Help by Microsoft Corporation

Windows

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HPJ File Popularity


Operating System Rank

7 (45.73%)
10 (44.56%)
8.1 (5.41%)
XP (2.79%)
8 (0.97%)


Troubleshooting Problems Opening HPJ Files


Typical HPJ Opening Challenges

Adobe RoboHelp Disappeared

When you double-click your HPJ file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". When this happens, it is commonly due to Adobe RoboHelp missing in %%os%%. This will prevent you from double-clicking to open the HPJ file because the OS doesn’t know how to handle it.


Tip: If you know of another program that can open your HPJ file, you can try opening it by selecting the application from the programs listed.


Obsolete Version of Adobe RoboHelp

In other instances, your Help Project File file version may not be supported by your version of Adobe RoboHelp. Installing the latest version of Adobe RoboHelp from Adobe Systems Incorporated is recommended. Your Help Project File file was probably created by a newer release of Adobe RoboHelp than what's currently installed your computer.


Tip: Right-clicking on your HPJ, then clicking "Properties" (Windows) or "Get Info" (Mac), can provide clues about your file version.


Regardless, most of the HPJ file opening problems relate to not having the right version of Adobe RoboHelp installed.


Other HPJ File Opening Causes

Although you might already have Adobe RoboHelp or another HPJ-associated software installed on your computer, you can still encounter problems opening Help Project File files. Other HPJ opening errors can be created by other system problems inside of %%os%%. These issues include:

  • Windows Registry HPJ file paths that are incorrect
  • Mistaken removal of the Windows registry HPJ description
  • Adobe RoboHelp or another HPJ application experienced a flawed installation
  • The HPJ itself is corrupted
  • Your HPJ is infected with malware
  • Device drivers of the hardware associated with your HPJ file are corrupt or out-of-date
  • Insufficient system resources to successfully open Help Project File files

Poll: Do you use a computer or mobile device more often to view files?






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