If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .aby

On this page, we're going to take a closer look at the .aby file extension, which is related to AOL Desktop Address Book.

We'll explain what exactly a .aby file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .aby files into different formats, we'll give you some tips on how to do that too.

Let's see the file format associated with this file extension!


  1. AOL Desktop Address Book

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AOL Desktop Address Book

aby file - AOL Desktop Address Book
The ABY file belongs to the Data category and works with AOL Desktop, being used as an AOL Desktop Address Book. AOL Desktop is a suite powered by AOL that facilitates access to web browsing, emailing and IM conversations. The developer is still actively supporting the AOL Desktop, likely. Based on our current information, AOL Desktop does not use other file types.
Application: AOL Desktop
Program name: -
Category: Data files
Mime-type: application/octet-stream
Related extensions:
.abp AVS Barcode Source Profile
.abcd AudioVisual Book Data
.abbu Mac OS X Address Book Backup
.ab1 DNA Electropherogram File

The .aby file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .aby extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .aby file extension wrong?

In our database, we came across the following similar extensions:

.any AnyRail Layout Plan
.abt Arbiter Game Schedule Data
.qby Intuit QuickBooks Accountant Import Data
.abu Asus ZenFone Backup Archive
.ab Applix Builder Data
.by PSpice Data

The .aby extension is frequently misused

People sometimes confuse the .aby filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

ay (1), abt (1), any (1), ab (1), qby (1), abg (1), bay (1), by (1)

Having trouble opening a .aby file?

If you want to open a .aby file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .aby association can trigger this error.

Windows can't open this file:

File: example.aby

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android