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HHC File Extension

HTML Help Table Of Contents
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What is HHC file?

Full format name of files that use HHC extension is HTML Help Table Of Contents. HTML Help Table Of Contents format was developed by Microsoft. Files with HHC extension may be used by programs distributed for Windows platform. HHC file format, along with 323 other file formats, belongs to the System Files category. Microsoft HTML Help Workshop supports HHC files and is the most frequently used program to handle such files, yet 2 other tools may also be used. Software named Microsoft HTML Help Workshop was created by Microsoft Corporation. In order to find more detailed information on the software and HHC files, check the developer’s official website.

Programs which support HHC file extension

Below is a table that list programs that support HHC files. Files with HHC suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support HHC file

How to open file with HHC extension?

There can be multiple causes why you have problems with opening HHC files on given system. What is important, all common issues related to files with HHC extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Get the Microsoft HTML Help Workshop

Install software to open HHC file The most common reason for such problems is the lack of proper applications that supports HHC files installed on the system. The most obvious solution is to download and install Microsoft HTML Help Workshop or one to the listed programs: Microsoft Windows, PSPad. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. If you want to download Microsoft HTML Help Workshop installer in the most secured manner, we suggest you visit Microsoft Corporation website and download from their official repositories.

Step 2. Check the version of Microsoft HTML Help Workshop and update if needed

Update software that support file extension HHCIf you already have Microsoft HTML Help Workshop installed on your systems and HHC files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why HHC files are not compatible with Microsoft HTML Help Workshop. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Microsoft HTML Help Workshop.

Step 3. Associate HTML Help Table Of Contents files with Microsoft HTML Help Workshop

If you have the latest version of Microsoft HTML Help Workshop installed and the problem persists, select it as the default program to be used to manage HHC on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Associate software with HHC file on Windows

Change the default application in Windows

  • Clicking the HHC with right mouse button will bring a menu from which you should select the Open with option
  • Select Choose another app → More apps
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the Microsoft HTML Help Workshop installation folder. Confirm by checking Always use this app to open HHC files box and clicking OK button.
Associate software with HHC file on Mac

Change the default application in Mac OS

  • From the drop-down menu, accessed by clicking the file with HHC extension, select Information
  • Find the Open with option – click the title if its hidden
  • Select Microsoft HTML Help Workshop and click Change for all...
  • A message window should appear informing that This change will be applied to all files with HHC extension. By clicking Continue you confirm your selection.

Step 4. Check the HHC for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper HHC file. It is probable that the file is corrupted and thus cannot be accessed.

Check HHC file for viruses
1. The HHC may be infected with malware – make sure to scan it with an antivirus tool.

If the HHC is indeed infected, it is possible that the malware is blocking it from opening. Scan the HHC file as well as your computer for malware or viruses. If the HHC file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If you obtained the problematic HHC file from a third party, ask them to supply you with another copy. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with HHC extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Sometimes in order to access files user need to have administrative privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the HTML Help Table Of Contents file.

4. Make sure that the system has sufficient resources to run Microsoft HTML Help Workshop

The operating systems may note enough free resources to run the application that support HHC files. Close all running programs and try opening the HHC file.

5. Ensure that you have the latest drivers and system updates and patches installed

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with HTML Help Table Of Contents files. It may be the case that the HHC files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the HHC file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on HHC file.

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