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ASU file format description

ASU file format

Many people share ASU files but don't explain how to use them. This can make it hard to know which software can open, change, or print these files. We made this page to help you understand how to work with ASU files. Here, you'll find info on software that works with these files. This includes simple programs for opening and converting them. We also share simple steps for editing these files and changing them into different formats. Whether you need to open, edit, or change a ASU file, our website has all the tips and tools you'll need to do it easily.

1 filename extension(s) found in our database:

ASU - Toolbook Package Definition

The ASU data files are related to Toolbook. The ASU file is a Toolbook Package Definition. ToolBook is an e-learning content development application developed and published by SumTotal Systems.

Application:Toolbook
Category:Data files
Mime-type:application/octet-stream
Magic:- / -
Aliases:-

Toolbook Package Definition related extensions:

  • ind Maple Repository Index File
  • hxh Microsoft Help 2 Merged TOC
  • chl Chromeleon Channel Raw Data
  • jmb Juniper Message Bundle Data

Did someone accidentally misspell the ASU filename?

The ASU filename extension may be misspelled. We compiled a list of similar file extensions to help you find errors.

Filename extensions similar to ASU:

Windows can't open your ASU file?

When you try to open a file by double-clicking it, Windows looks at the file's name to figure out what to do. If Windows doesn't know the file type, it'll ask you to choose an app to open this ASU file.

To set the ASU file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. In the Default apps section, you will find various categories. They include Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate. For example, choose Photos for image files, or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the app you want is not listed, click on More apps to see more options. Or, click on Look for an app in the Microsoft Store to search for apps.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set ASU file association. Many apps can open files. They don't need a specific file association to be set.

Handle ASU files with care

Exercise caution when handling ASU files from unknown sources. Files from certain sources can threaten your computer's security. They might contain malware, viruses, or harmful software. To minimize risks, avoid downloading or opening unfamiliar ASU files. Use trusted antivirus software to scan files from unknown sources before opening.

If you find the information on this ASU page useful, please feel free to link to this page.

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