Opening an A00 File

The A00 file type is primarily associated with ALZip.

A00File Extension A00
File extension: A00
File type:  split archive file

What is an A00 file?

A00 files mostly belong to ALZip by ESTsoft. A00 is an extension used by ALZip and ARJ split volume archives. The first file in the archive typically uses this extension. A01, A02, etc. are the next files in the sequence. An accompanying EXE file, when run, combines the archives and extracts the contents.

  • Necessity: Compressing huge amounts of data into a single extractable file, makes it difficult to transfer the file across the internet. File compression software overcomes this hurdle by archiving several smaller sized sequentially named partitions of the original compressed file. These partitions can then be easily transferred one by one, to the intended destination. Once they are received, the end-user can use the same software again, to simultaneously combine these files and extract all the original data.
  • Supported Software: ALZip from ESTSoft, archives and compresses files in ALZ file format. It's partition archive files are sequentially named as A00, A01,A02 and so on. It is possible to retrieve the original contents, provided all the sequential file partitions are present, along with an initial ALZ file. ARJ software utilizes the A00 file extension in the same manner as ALZip, in the course of unpacking the contents.

How to open A00 files

You need a suitable software like ALZip to open an A00 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your A00 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a A00 file directly in the browser:. Just drag the file onto this browser window and drop it.

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Programs that open and convert A00 files:

  1. ALZip by ESTsoft
    See the previous paragraphs to learn more about the main application. A00 files are often referred to as ALZip compresseds because this type of file is primarily created or used by this software.
  2. ARJ (split archive file) by Robert K. Jung
    ARJ stands for Archived by Robert Jung. It is a high-efficiency archiving and compression utility. ARJ supports both single-volume and spanned (multiple-volume) archives. To create spanned archives, ARJ splits files into compressed volumes and gives each volume a numbered extension. The first file has the ARJ extension, followed by A01, A02 and so on. A00 is one of the of the extensions of the spanned archive created by ARJ. This file format is classified as Compressed. Related links: ARJ on Wikipedia, Open Source Implementation of ARJ

Technical Data for A00 File Extension

File classification:
Compressed
Related files:

an a00 split archive file is a special file format by ESTsoft and should only be edited and saved with the appropriate software.

How to solve problems with A00 files

  • Associate the A00 file extension with the correct application.
  • Update your software that should actually open split archive files. Because only the current version supports the latest A00 file format. Search, therefore, e.g. on the ESTsoft manufacturer website after an available ALZip update.
  • To make sure that your A00 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
  • Click here to open your .A00 file online - secure, fast, and no downloads needed.
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