Opening an AUF File

The AUF file type is primarily associated with Audacity.

AUF	File extension: AUF
	File type:	versatile data file

What is an AUF file?

AUF files mostly belong to Audacity. AUF files can serve different functions. The most common use is as an Audacity project audio data file. In this form, AUF files hold block information used to rebuild an audio editing session in Audacity.
Some AUF files are formatted as Windows executable files by AviUtl. These files contain code and data that run in a Windows environment.
Other AUF files store point cloud data. They carry coordinate information in text format, used by surveying and mapping software like Carlson SurvCADD.

Audacity project data: Contains session block and project details. More information is available at Audacity.
AviUtl executable: Often a generic application data file that runs on Windows. Details can be found at AviUtl.
Point cloud data: Holds coordinate text data for mapping, used with Carlson SurvCADD. Visit Carlson SurvCADD for more info.

How to open AUF files

You need a suitable software like Audacity to open an AUF 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 AUF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a AUF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online AUF Text Viewer

Choose your .auf file to analyze

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Programs that open and convert AUF files:

Audacity
See the previous paragraphs to learn more about the main application. AUF files are often referred to as Audacity audios because this type of file is primarily created or used by this software.
Alphacam (User Font) by Planit
Alphacam is a leading CAD/CAM software solution for the Woodworking industry. The core product of the company is Alphacam and is used in the manufacture of many types of components, from simple routed parts to complex, 5-axis furniture components. This file format is classified as CAD/CAM.
ASAUpdaterV2 (Update File) by ASA Datec Datensystem GmbH
[German link] File to update the LTBO database used by LTBOffice, an aircraft maintenance application. This file format is classified as Database.
Audacity
Audacity is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems. The identifying characters used for this association are - Hex: 41 75 64 61 63 69 74 79 42 6C 6F 63 6B 46 69 6C 65, ASCII: AudacityBlockFile. This file format is classified as Audio.
Hansen Information Technologies (Login Information) by Hansen Information Technologies
The file name is AFSYS.AUF. It seems to hold the username/password to the datasource(s) being used.

AUF file format details:

Every file has a defined file format, i.e. how the data is arranged in the file. The file format can be deduced from the file extension and the signature. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. When there is a problem with a file, the first step to solving it is to determine the file format. Our evaluation of the AUF files looks like this:

AUF is not a common file extension and is used by different programs with different formats. However, the following two file formats are common:

35% of all AUF files belong to Audacity Block File. The contents of these files cannot be read by a human; only a computer program can interpret the data. The average file size is 12 KB with most files being between 9 KB and 12 KB in size. Certain words are almost always found in the files, such as AudacityBlockFile112. Examples of file names are b00000.auf.
10% of all AUF files store the data in the EXE file format. EXE is the abbreviation for executable and is the standard executable file format on Windows. The format can be identified by the letters "MZ" at the beginning. Executable files can also be used to distribute viruses and other types of malicious software (malware). The contents of these files cannot be read by a human; only a computer program can interpret the data. The files are often between 72 KB and 440 KB in size. The following keywords are characteristic: This and program.

The remaining 55% of all AUF files are files with no common format. These files are often connected to points. If you want to find out what your AUF file contains, drag and drop it onto this page.

Technical Data for AUF File Extension

File classification:

Audio

Identifier:

Hex: 41 75 64 61 63 69 74 79 42 6C 6F 63 6B 46 69 6C 65, ASCII: AudacityBlockFile (provided by TrID database)

Related files:

aup, aup3, asc, pts, uaf, zip, txt, ny, exe

an auf versatile data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with AUF files

Associate the AUF file extension with the correct application.
Update your software that should actually open versatile data files. Because only the current version supports the latest AUF file format. Search, therefore, e.g. on the manufacturer website after an available Audacity update.
To make sure that your AUF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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