Opening an AAT File

The AAT file type is primarily associated with ArchiCAD.

AATFile Extension AAT
File extension: AAT
File type:  configuration file

What is an AAT file?

AAT files mostly belong to ArchiCAD. AAT files are used by ArchiCAD to store attribute data. They come in two forms: one is an Attribute Manager File that holds active attribute settings for a project, and the other is an Attribute Manager Template that provides preset configurations for new projects.
These files control how object attributes (such as colors, materials, and other properties) are defined and applied within the design. They are part of a proprietary internal format and are meant to be used only with ArchiCAD. Manual edits outside of ArchiCAD can corrupt the file and affect project consistency.
Key details provided by FilExt.com include:

  • Attribute Manager File: Contains definitions that are actively used to manage project attributes.
  • Attribute Manager Template: Offers a base setup for attributes to be applied in new projects.

For further details, visit Graphisoft or check the Graphisoft Help Center.
FilExt.com tip: Using ArchiCAD to open and manage these files is important. They are not designed for viewing or editing in standard text editors, and it is wise to keep backups before making any changes.

How to open an AAT file

You need a suitable software like ArchiCAD to open an AAT file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your AAT file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a AAT file directly in the browser:. Just drag the file onto this browser window and drop it.

Online AAT Text Viewer

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Programs that open and convert AAT files:

  1. ArchiCAD
    See the previous paragraphs to learn more about the main application. AAT files are often referred to as ArchiCAD cads because this type of file is primarily created or used by this software.
  2. Arcinfo Line Data Attribute Data
    GIS-related file.

Technical Data for AAT File Extension

File classification:
CAD
Related files:
Mime type:

an aat configuration file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with AAT files

  • Associate the AAT file extension with the correct application.
  • Update your software that should actually open configuration files. Because only the current version supports the latest AAT file format. Search, therefore, e.g. on the manufacturer website after an available ArchiCAD update.
  • To make sure that your AAT file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
  • Click here to open your .AAT file online - secure, fast, and no downloads needed.
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