A01 File Extension
Split Multi-volume ARJ Compressed Format Archive (part 3)
- File Type a01
- Developer ESTsoft
- Popularity
- Application ARJ32
- Category Compressed Files
What is a A01 file?
Split Multi-volume ARJ Compressed Format Archive (part 3), identified by the A01 extension, is a Compressed Files type and includes 820 files.
The Split Multi-volume ARJ Compressed Format Archive (part 3) (A01) was created by ESTsoft, a company that developed file format and produced 4 programs for their use.
A01 files are compatible with various operating systems, including Windows and Mac OS. If you need to extract a A01 file, you can use one of 7 programs, such as ARJ32, StuffIt and WinZip.
Programs that support A01 files
How to open a A01 file?
If you’re having difficulty opening a A01 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.
ARJ32, StuffIt and WinZip are recognized as the most popular software solutions for dealing with A01 files. To install the most up-to-date edition of ARJ32, visit the official ARJ Software website. You can download the build that works across all operating systems.
After successful installation, your operating system should seamlessly handle A01 files via ARJ32.
Set ARJ32 as your default A01 viewer
Setting a default program by file type in Windows
- Right-click your A01 file, then navigate to the "Open With" option and click "Choose Another Application" to continue;
- From the list of applications in the pop-up window, find and select ARJ32 as your desired application;
- Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening A01 files.
Set default app to open files on Mac
- Right-click or Control + left-click on the desired A01 file to open a menu of available actions;
- Select "Open in application" and click "Other";
- Go to the lower section of the window, where you will find the "Enable" menu. By default, it is set to "Recommended Programs";
- Select "All Programs" from this menu and proceed to search for ARJ32. Check the box next to "Always open in app" to set it as the default option.
How to edit a A01 file?
Editing A01 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 3) programs.
List of Top A01 editors 2026
With the mentioned criteria in mind, we have assembled a selection of A01 editors.
| A01 Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| ARJ32 | ARJ Software | Windows | 4.2 out of 5 (39 reviews) |
Convert to and from A01
When a A01 file is not easy to work with, converting it to formats like 7Z, 008 or other comparable types may help.
Converting a A01 file may not fully retain all functionality, but it is generally possible to return it to the original format.
Convert A01 to other file formats
Converting Files to A01 Format
Solving Common A01 File Challenges
A01 files may present some challenges, but most can be easily addressed with minor software tweaks. See the troubleshooting tips below for guidance.
Are there any techniques or tools available to repair a damaged A01 file?
Open the damaged A01 file with a recovery program, and then select the "Repair" menu item to start the repair process. Wait for the recovery process to finish, as it will automatically repair damaged compressed files.
What are the telltale signs of a corrupt A01 file?
Corrupted A01 compressed files may show the following signs:
- Unexpected expansion of the total size of the A01 file;
- Opening or processing the file in ARJ32 or other programs causes instability or crashes in the program;
- The file shows errors when trying to open it or does not open completely;
- While working with the file, error messages appear;
- Editing the archive in ARJ32 is accompanied by slow performance or delays;
What factors contribute to ARJ32 crash?
ARJ32 crashes can occur due to outdated software versions. To mitigate this, install the latest updates for ARJ Software products.
A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.