USER file format description

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

2 filename extension(s) found in our database.

.user - Unix Filesystem User Quota Data

The USER file is a Unix Filesystem User Quota Data(quota.user or aquota.user). On UNIX systems, quota.user contains user quotas for each filesystem.

Data files
- / -
Unix Filesystem User Quota Data related extensions:
Response Channel Manager Template
SAM Multiple Domain Alignment Output
Easiteach Lesson
Topocad Section Template
Subaru HDS++ OPE File Editor Data

.user - Visual Studio Project User Options Data

The USER development files are related to Microsoft Visual Studio. The USER file is a Visual Studio Project User Options Data. Microsoft Visual Studio is a Integrated Development Environment (IDE) developed by Microsoft to develop GUI (Graphical User Interface), console, Web applications, web apps, mobile apps, cloud, and web services, etc.

Microsoft Visual Studio
Development files
- / -
Visual Studio Project User Options Data related extensions:
.NET Strong Name Key
J Script File
Parrot Intermediate Representation File
LiveCode Script
PowerBASIC DOS Compiled Unit
Gosu Template

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

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

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

ser, use, usr

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

SigmaWin+ User Level Data
GeneMapper Project
SmartMusic Custom Data
Webalizer Language Data
EAGLE User-specific Parameters Data
MKS Source Integrity Project Cache

Operating systems 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 .user file format, then write to us! >> USER file