A12 File Extension
Split Multi-volume ARJ Compressed Format Archive (part 14)
- File Type a12
- Developer ARJ Software, Inc.
- Popularity
- Application ARJ32
- Category Compressed Files
What is a A12 file?
The A12 file extension is linked to Split Multi-volume ARJ Compressed Format Archive (part 14) and belongs to the Compressed Files category, which includes 820 files.
The Split Multi-volume ARJ Compressed Format Archive (part 14) (A12), created by ARJ Software, is one of file format they developed, and they also built 2 programs to support them.
A12 files are compatible with various operating systems, including Windows. When working with A12 files, you can rely on 5 programs, including ARJ32, WinZip and 7-zip.
How to open a A12 file?
If you can’t open a A12 file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
ARJ32, WinZip and 7-zip are recognized as the most popular software solutions for dealing with A12 files. If you wish to install the latest release of ARJ32, visit the official ARJ Software portal and download the edition that works on any operating system.
After installation, your operating system should automatically open A12 files with ARJ32.
Make ARJ32 the default A12 viewer
Setting a default program by file type in Windows
- Right-click on your A12 file, then choose the "Open with" option and select "Choose another application" from the available options;
- Inside the popup window, scroll through the list of applications and specifically choose ARJ32 as the application to associate with your A12 file;
- Check the "Always use this app" checkbox and click "OK".
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired A12 file to access a dropdown menu of actions;
- Select "Open in application" and click "Other";
- Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
- In this menu, select "All Programs", then find ARJ32 and check the box next to "Always open in the application."
How to edit a A12 file?
Editing A12 files requires installing professional software that lets you open and edit compressed files. Online editors have more limitations compared to dedicated Split Multi-volume ARJ Compressed Format Archive (part 14) programs.
Best A12 editors in 2026
Based on these criteria, we have prepared a list of available A12 editors.
| A12 Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| ARJ32 | ARJ Software | Windows | 4.2 out of 5 (39 reviews) |
Finding answers to A12 file problems
There are some common issues with A12 files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.
What are the possible solutions to recover a corrupt A12 file?
Use a data recovery program to open the damaged A12 file and from the menu choose "Repair" function to start the repair process. Then wait for the recovery process to complete, which allows you to automatically repair corrupted compressed files.
What are the warning signs that my A12 file may be corrupted?
Corrupted A12 compressed files may show the following signs:
- Error messages appear during the course of working with the file;
- Editing the archive in ARJ32 is accompanied by slow performance or delays;
- The file does not open or opens with errors;
- Unexplained increase in A12 file size;
- File hangs or crashes in ARJ32 or other programs;
What are the possible causes of ARJ32 crashing?
ARJ32 crashes can be caused by outdated software. Keep your ARJ Software products up to date by installing the latest updates.
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.