>> REJ file

REJ file format description

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

1 filename extension(s) found in our database.

.rej - Patch Reject File

The REJ other files are related to GNU Patch. REJ file is a Patch Reject File. GNU patch takes a patch file patchfile containing a difference listing produced by the diff program and applies those differences to one or more original files, producing patched versions. If patch cannot find a place to install that hunk of the patch, it puts the hunk out to a reject file, which normally is the name of the output file plus a .rej suffix.

GNU Patch
Other files
- / -
Patch Reject File related extensions:
YobiDrive Link
System File
Microsoft Crash Report
EPSi Firmware Image
Aston Shell Plug-in
CYANA Macro File

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

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

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

re, rek, rem, rei, reu

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Python Regular Expressions Source Code
Reason Module
Fraunhofer EZRT Volume Data
Backup Copy File
Personal Backup Saved Task
Reason Module Interface

Operating systems

DataTypes.net 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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