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Informations about the AUX filename extension and the file formats associated with it

We collected the information you should know about the .aux filename on this page. If you were sent a(n) .aux file in an e-mail, but you don’t know what to do with it, then you can find help here. We strive to suggest free, open-source applications that are available to everyone for the file formats.

1 filename extension(s) are in our database

.aux - ArcGIS Auxilliary File

The AUX file is a GIS file, which is connected to the ArcGIS Auxilliary File according to our registry. With the adequate settings, the ArcGIS Auxilliary File (.aux) files can be opened or converted with the help of ArcGIS.

Format description:
AUX format
Magic string:
- / -
Related links:
Related extensions:
ArcGIS Optional Index
ArcGIS Attribute Index
ArcGIS BIL World File
ArcGIS Codepage
DTED Level 0 Data
DTED Level 1 Data

Important! Programs other than the ones listed above may also use the .aux file extension. Even harmful programs can create files with the .aux extension to store data in them. Always be careful with .aux files coming from unknown sources. Don’t open executable files that arrived in mails, even if you know the sender.

The .aux file can’t be opened on your computer?

If the program necessary for opening the .aux file is installed properly on your computer, then the quickest and simplest way to open the .aux file is to double-click on the file’s name. If that doesn’t work, then the right software probably isn’t installed on your computer.

While opening the .aux file, you may receive an error message from the associated application, this can be caused by the following:

Incorrectly given .aux extension

The .aux filename extension can be given incorrectly sometimes. The cause of the error could be a mistake or a simple typo. We found the following incorrectly given filename extensions that are the most frequent in the case of .aux files.

ahx, uax, auz, aud, au, ux, ax, aus, auc

Maybe you’re not even looking for the .aux file extension?

It’s possible the the file’s extension was given incorrectly. Below, we list some filename extensions that are similar to the .aux extension. It’s possible that the one you’re looking for is among them.

AHX Encoded Audio
DirectShow Filter Plugin
Sun Audio File
Unreal Tournament Sound Package
Microsoft Dynamics AX Application Unicode Object Cache
XMetaL XML Configuration File

Associated applications

The Windows operating system stores information about the applications associated to the file extensions in the registry database. The associations can be queried or modified in the Command Prompt window with the "assoc" command.

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We gladly accept application suggestions, but our primary goal is to suggest reliable, open-source applications that can be freely distributed to the users.

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