001 File Extension

What is 001 file?

File with .001 extension contains a part of data archive created using a file archiving software. 001 file can use compression. 001 is a generic suffix used by many archive-splitting tools, which may support various compression methods. In order to access the original data, all subsequent parts of the archive (typically, an ascending number convention is used for each part’s extension, i.e., .001, .002, .003, etc.) must be present.

001 file is usually the first part of a split archive. Such files also contain control information for the subsequent parts, which allows given program to determine how many parts are needed to recreate the archive file. 001 files are used for splitting larger archives into smaller parts, which are easier to manage, transport and store, for example, on CDs, or for creating smaller email attachments. 001 format can also be used for splitting ISO images or large binary files.

Programs which support 001 file extension

The list that follows enumerates programs compatible with 001 files, divided into 3 categories based on operating system on which they are available. 001 files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Updated: 07/14/2019

How to open file with 001 extension?

There can be multiple causes why you have problems with opening 001 files on given system. On the bright side, the most encountered issues pertaining to Split Archive Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with 001 files.

Step 1. Get the StuffIt Deluxe

The main and most frequent cause precluding users form opening 001 files is that no program that can handle 001 files is installed on user’s system. The most obvious solution is to download and install StuffIt Deluxe or one to the listed programs: HJSplit, 001 File Joiner & Splitter. Above you will find a complete listing of programs that support 001 files, classified according to system platforms for which they are available. The safest method of downloading StuffIt Deluxe installed is by going to developer’s website (Smith Micro Software, Inc.) and downloading the software using provided links.

Step 2. Check the version of StuffIt Deluxe and update if needed

You still cannot access 001 files although StuffIt Deluxe is installed on your system? Make sure that the software is up to date. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of StuffIt Deluxe installed, it may not support 001 format. The most recent version of StuffIt Deluxe is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate Split Archive Format files with StuffIt Deluxe

If the issue has not been solved in the previous step, you should associate 001 files with latest version of StuffIt Deluxe you have installed on your device. The method is quite simple and varies little across operating systems.

The procedure to change the default program in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the 001 file
• 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 StuffIt Deluxe installation folder. Confirm by checking Always use this app to open 001 files box and clicking OK button.

The procedure to change the default program in Mac OS

• From the drop-down menu, accessed by clicking the file with 001 extension, select Information
• Open the Open with section by clicking its name
• Select the appropriate software and save your settings by clicking Change all
• If you followed the previous steps a message should appear: This change will be applied to all files with 001 extension. Next, click the Continue button to finalize the process.

Step 4. Check the 001 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 001 file. Being unable to access the file can be related to various issues.

1. The 001 may be infected with malware – make sure to scan it with an antivirus tool.

If the 001 is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the 001 file is indeed infected follow the instructions below.

2. Ensure the file with 001 extension is complete and error-free

Did you receive the 001 file in question from a different person? Ask him/her to send it one more time. 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. If the 001 file has been downloaded from the internet only partially, try to redownload it.

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

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the Split Archive Format file.

4. Check whether your system can handle StuffIt Deluxe

If the systems has insufficient resources to open 001 files, try closing all currently running applications and try again.

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

Latest versions of programs and drivers may help you solve problems with Split Archive Format files and ensure security of your device and operating system. It may be the case that the 001 files work properly with updated software that addresses some system bugs.

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