Did you find an AAT file on your computer and wonder what program should open it? Maybe someone emailed you an AAT file but you're not sure how to use it. Perhaps you tried to open the AAT file but Windows told you that it could not open it.
Before you can open an AAT file (assuming it's even a file format that's intended to be viewed or edited), you'll need to determine what kind of file the .AAT file extension refers to.
Other types of files may also use the AAT file extension. If you know of any additional file formats that use the .AAT extension, please let me know so I can update this information.
How To Open an AAT File:
The easiest way to open an AAT file is to double-click on it and let your PC decide which default application should open the file. If no program opens the AAT file then you probably don't have an application installed that can view and/or edit AAT files.
Warning: Take great care when opening executable file formats received via email or downloaded from websites you're not familiar with. See my List of Executable File Extensions for a listing of file extensions to avoid and why.
As of this writing, I don't have information on any specific applications that will view AAT files or open AAT files for editing. If you know of any, please send me a quick email and let me know the name of the program so I can update this page.
Tip: Use Notepad or another text editor to open the AAT file. Many files are text-only files meaning no matter the file extension, a text editor may be able to properly display the file's contents. This may or may not be the case with AAT files but it's worth a try.
If you find that an application on your PC does try to open the AAT file but it's the wrong application or if you would rather have another installed program open AAT files, see my How To Change the Default Program for a Specific File Extension guide for making that change in Windows.
How To Convert an AAT File:
There are two main ways to attempt to convert an AAT file to another file type:
- Open the AAT file in its default program and choose to save the open file as another file format.
- Use a File Conversion Online Service or Software Program to convert the AAT file to another file format.
The first option involving opening the AAT file in its native program is preferable because it's both easier and will probably result in a more accurate file conversion. Of course if you don't have a program that opens AAT files, a third-party file conversion tool (the second option) could be very useful.
Important: You cannot usually change a file extension (like the AAT file extension) to one that your computer recognizes and expect the newly renamed file to be usable. An actual file format conversion using one of the methods described above must take place in most cases.
Still Having Problems Opening or Using an AAT File?
Let a community of computer support enthusiasts help out! Post in the PC Support Forum about what kinds of problems you're having with opening or using the AAT file and we'll see what we can do to help.
