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>> ASU file

ASU file format description

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

1 filename extension(s) found in our database.

.asu - Toolbook Package Definition

ASU file is a Toolbook Package Definition. ToolBook is an e-learning content development application developed and published by SumTotal Systems.

.asu file format description:
ASU format
Application:
Toolbook
Category:
Data files
Mime-type:
application/octet-stream
Magic:
- / -
Aliases:
-
Toolbook Package Definition related links:
Wikipedia Article
Toolbook Package Definition related extensions:
.cia
Nintendo 3DS CTR Importable Archive
.dbs
DB/TextWorks Textbase Structure Data
.vac
Vocaloid Accessory File
.xxx
Singer XL Embroidery Data
.tmn
Tmin Input File
.pht
ParaView Phasta Metafile

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

Can't open a .asu 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:

example.asu

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 .asu file extension is often given incorrectly!

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

acu, aus, asy, asj, ash, aeu, qsu, au, ask, asi, as

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.acu
ACUCOBOL-GT Compiled Program
.au
Sun Audio File
.asj
Aldfaer Data File
.aeu
Autoroute Express Europe Route Data
.aus
AutoREALM Symbols
.ask
AskSam Database

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