>> ATT00001 file

ATT00001 file format description

Many people share .att00001 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .att00001 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .att00001 files.

1 filename extension(s) found in our database.

.att00001 - Microsoft Exchange Generic Attachment Data

The ATT00001 data files are related to Microsoft Exchange Server. ATT00001 file is a Microsoft Exchange Generic Attachment Data. Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems.

Microsoft Exchange Server
Data files
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Microsoft Exchange Generic Attachment Data related extensions:
DHCP Unique Identifiers Data
Microsoft Windows 10 System Data
CAMtastic Mid Layer Gerber Data
Windows Live Photo Gallery Thumbnail Database
ERGO Format Data
ProntoVIEW-MARKUP X-Y Rotation Data

Naturally, other applications may also use the .att00001 file extension. Even harmful programs can create .att00001 files. Be especially cautious with .att00001 files coming from an unknown source!

Can't open a .att00001 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.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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