H__ File Extension

H__ file icon

C++ Header

What is a H__ file?

The H__ extension is related to C++ Header and is classified in the Developer Files category, which contains 1166 files.

H__ files are compatible with various operating systems, including Windows, Linux and Mac OS. If you need to open a H__ file, you can use one of 2 programs, such as C++ Builder and Microsoft Visual Studio.

How to open a H__ file?

If you’re having difficulty opening a H__ file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.

C++ Builder and Microsoft Visual Studio are among the most widely used programs for handling H__ files. To set up the newest version of C++ Builder on your device, simply go to the official Embarcadero website. There you can download the edition compatible with every operating system.

Once the process is complete, C++ Builder should take over as the default application for H__ files.

Make C++ Builder the default H__ viewer

Change the default app to open files on Mac

  1. Right click or use Control + Left Click on the desired H__ file to access a dropdown menu of actions;
  2. Choose "Open in Application" and click "Other";
  3. At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
  4. Choose "All Programs" in this menu and search for C++ Builder. Check the box next to "Always open in app" to make it the default program.

Change default programs in Windows

  1. Start by right-clicking on your H__ file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
  2. Inside the popup window, scroll through the list of applications and specifically choose C++ Builder as the application to associate with your H__ file;
  3. Check the "Always use this app" checkbox and click "OK".

Finding answers to H__ file problems

Rest assured, any issues with H__ files can typically be addressed with simple software adjustments. See the tips below for help.

What are the steps to repair a damaged H__ file?

Open the damaged H__ file in a recovery program and select the "Repair" menu item to start the repair operation. Allow the recovery process to complete, which will automatically repair the damaged developer files.

What are the methods to detect if my H__ file has been corrupted?

The signs of corrupted H__ developer files can manifest as:

  • Unexplained H__ file size inflation;
  • C++ Builder or other programs stop responding or crash when trying to handle the file;
  • When opening the file, errors occur or the inability to access its contents;
  • While working with the file, error alerts are encountered;
  • The file shows slow performance when edited in C++ Builder;

What are the reasons behind C++ Builder crash?

Insufficient software updates can contribute to C++ Builder crash. To avoid this, make sure that you have installed the latest updates for Embarcadero products.

A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.

How to edit a H__ file?

To modify H__ files, it is necessary to install dedicated software that lets you open and edit developer files. Online H__ editors generally offer fewer tools compared to programs designed for C++ Header.

Best H__ Editor Software in 2026

Based on the criteria above, here is a selection of H__ editors you can use.

H__ Editor SoftwareDeveloperPlatformsOverall Rating
Microsoft Visual StudioMicrosoftWindows, Mac OS, Linux4.2 out of 5 (35 reviews)
C++ BuilderEmbarcaderoWindows4.1 out of 5 (33 reviews)