A daily updated filename extension database!

ABY file extension

The table below provides useful information about the .aby file extension. It answers questions such as:

  • What is the .aby file?
  • What program do I need to open a .aby file?
  • How can the .aby file be opened, edited or printed?
  • How can I convert .aby files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ AOL Desktop Address Book

ABY file is an AOL Desktop Address Book. AOL Desktop is a suite powered by AOL that facilitates access to web browsing, emailing and IM conversations.
ABY format description not yet available
Category: Data files
Application: AOL Desktop
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ABY aliases:
ABY related links:
ABY related extensions:

Other types of files may also use the .aby file extension.

🚫 The .aby file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ab, abt, abu, any, ay, bay, by, qby

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Applix Builder Data
PSpice Data
Android ADB Backup Archive
Intuit QuickBooks Accountant's Import
ED-IT PC AsIs Braille Text File
Act! Database Index
AnyRail Layout Plan
AY-3-8910 Music
Casio RAW Image

🔴 Can't open a .aby file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .aby file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .aby file extension, write to us!

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