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>> AUX file

AUX file format description

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

1 filename extension(s) found in our database.

.aux - ArcGIS Auxilliary File

AUX file is an ArcGIS Auxilliary File. An auxiliary (AUX or AUX.XML) file accompanies the raster in the same location and stores any auxiliary information that cannot be stored in the raster file itself.

.aux file format description:
AUX format
GIS files
- / -
ArcGIS Auxilliary File related links:
ArcGIS Auxilliary File related extensions:
ArcGIS Optional Index
ArcGIS Attribute Index
ArcGIS BIL World File
ArcGIS Codepage
DTED Level 0 Data
DTED Level 1 Data

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

Can't open a .aux 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:


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 .aux file extension is often given incorrectly!

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

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

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

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

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

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