>> AAO file

AAO file format description

Many people share .aao files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .aao file can be edited, converted or printed with. On this page, we try to provide assistance for handling .aao files.

1 filename extension(s) found in our database.

.aao - Agenda At Once Database

The AAO data files are related to Agenda At Once. AAO file is an Agenda At Once Database. Agenda At Once is a personal information manager (PIM) and to-do application for Microsoft Windows.

Agenda At Once
Data files
- / -
Agenda At Once Database related extensions:
Adobe Content Server Manager Data
Adobe RoboHelp Help A-Keywords Index
Adobe RoboHelp Internal Data
Adobe RoboHelp Folder Contents
Adobe Presenter Audio Thumbnail
Adobe RoboHelp Browse Sequence

Naturally, other applications may also use the .aao file extension. Even harmful programs can create .aao files. Be especially cautious with .aao files coming from an unknown source!

Can't open a .aao 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 can't open this file:


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 one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .aao file extension is often given incorrectly!

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

aa, aai, aal, aap, ao, xao

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Dune HD Image
Audible Audiobook
Agent Animation List
Apollo Advanced Playlist
ActionOutline Outline
SALOME Geometry XAO Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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If you have useful information about the .aao file format, then write to us!

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