While searching for an answer to the question - How to open the HHP file? - you probably found websites, which offer software that was able to open any file extension. Do not be fooled, there is no one program that will allow you to work with any file extension, including the HHP file. Each program contains a different type of data and you need specialized software to properly work with the HHP file. Here is a list of programs that are designed to work with the HHP file - remember, these applications are able to open at most a few file extensions, they are designed to work with a specific data type.
| File type | Microsoft HTML Help Project |
| Developer | Microsoft Corporation |
| Popularity | |
| Share |
If after installing the program from a list, you still cannot open a file with the HHP extension, the reason may be that the file is damaged. The solution may be to find a new copy of the HHP file you want to open
In this case, the easiest way is to use the tool built into the operating system for association of the HHP file with applications to support it. Double click on the file you cannot open - the operating system will display a list of programs that are likely to work with your HHP file. Choose one of them, or select the location on a disk where you installed one of the applications from our list. Windows should then open the HHP file using the program installed earlier.
Entries containing links of the HHP file extensions with applications is located in the HKEY_CLASSES_ROOT. If you do not know how to get to the Windows Registry, or how to make changes in it, ask a specialist for help. Lack of knowledge on the subject may cause irreversible changes on your computer.
There may be a situation when a computer virus passes itself off as the HHP file. In this case, such a file will definitely not be opened. Download a good antivirus program and scan the HHP file mentioned. If the antivirus application detects malicious data, it may signify that the HHP file is infected.
| HH | C++ Header Format |
| HHSL | Hockey High Score List Format |
| HHL | Visual Basic |
| HHK | Microsoft HTML Help Index Format |
| HHH | Power C Precompiled Header Format |
| HHC | HTML Help Table Of Contents Format |
| HHP | Microsoft HTML Help Project |
| HHT | Microsoft Help And Support Center HHT Format |
| HHPACK | HTC Home Extension |
| HHS | Microsoft HTML Help Workshop Sample |
