DBU file format description

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

1 filename extension(s) found in our database.

.dbu - Client-Course Manager Database Expansion Update

The DBU data files are related to Client-Course Manager. The DBU file is a Client-Course Manager Database Expansion Update. The Client-Course Manager seems to be no longer supported.

Client-Course Manager
Data files
- / -
Client-Course Manager Database Expansion Update related extensions:
Client-Course Manager Customized Report Distribution Data
Programmers File Editor Data
Ohanae Encrypted Data for Privat Use
Nexpose Vulnerability Check Data
Koha Offline Circulation Data
Mamut Enterprise Database Backup

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

Can't open a .dbu 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 .dbu file extension is often given incorrectly!

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

bu, cbu, db, dbh, dbi, dbk, dby, dfu, dgu, dhu, dub, ebu, fbu, sbu, vbu

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

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Fly! Database Index
FEBE Firefox Backup

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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


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

DataTypes.net >> DBU file