There are 8 other file types using
the KEY file extension!

key icon.key - iWork Keynote '09 presentation [common]

key icon.key - Microsoft Windows 7 registry key file [common]

empty icon.key - OS/2 archive key

empty icon.key - ArcView geocoding matching keys

empty icon.key - DataCAD custom toolbar file

empty icon.key - Keyboard definition file

empty icon.key - Avira AntiVir Personal license key

empty icon.key - BioWare Infinity and Aurora game engine resource data

Bookmark & share this page with others:

KEY file extension - Licence or encrypted security key

What is key file? How to open key files?

File type specification:

Encoded and encrypted file type icon Encoded and encrypted file type

File extension key is frequently used by various programs for files that hold various encrypted data or keys, such as program licenses.

These files are not meant to be opened directly. Programs access them to verify legally purchased licenses and such. For example antivirus programs like Avira or Kaspersky use key files to store personal licenses.

Also used for various encrypted files (keys) by security programs.

The default software associated to open key file:

Kaspersky Anti-Virus icon

Kaspersky Lab logoKaspersky Anti-Virus  Microsoft Windows software

Company or developer:
Kaspersky Lab

Kaspersky Anti-Virus is set of tools that protect computers against viruses, trojans, worms and other malicious software.

Avira Premium Security Suite icon

Avira GmbH logoAvira Premium Security Suite  Microsoft Windows software

Company or developer:
Avira GmbH

Avira Internet Security Suite is a dedicated computer security and internet connection protection software by Avira. It protects against viruses, trojans, phising, rootkits and all the messy stuff that can ruin your computer.

Help how to open:

These files are not meant to be opened directly.

How to convert:

You typically cannot converted these files to anything else, there is also no reason to do so.

List of recommended software applications associated to the .key file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open key file, edit key file, convert key file, view key file, play key file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with key file - Licence or encrypted security key

Click on the software link for more information about Kaspersky Anti-Virus. Kaspersky Anti-Virus uses key file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Previous file extension
KDE file extension > Encoded and encrypted file types

Next file extension
file extension KEY


Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed