>> CIS file

CIS file format description

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

1 filename extension(s) found in our database.

.cis - CheckInbox Settings

The CIS configuration files are related to CheckInbox. The CIS file is a CheckInbox Settings. CheckInbox is a simple POP mail checker software.

Configuration files
- / -
CheckInbox Settings related extensions:
Bash Configuration
RSNetWorx Configuration
Microsoft Expression Encoder Preset
TFSImage Settings
Borland Turbo Configuration
Initialization File

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

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

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

ci, cic, cie, ciq, ciw, cix, cjs, cks, cls, cos, cs, csi, cus, dis, fis

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Capture One Settings
CLASS Group Abbreviation
ContentServ CS EMMS Include
Chiasmus Key File
FDS Imaging Software HW Configuration
Scilab Binary Diagram

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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