Open KEY File format – Programs and How to view it

iWork Keynote ’09 presentation file definition and 9 other types and linked programs information.


How to Open Key Files


The File extension key is used by the following type(s):

 type 1 description:
iWork Keynote ’09 presentation 



that open key files:

iWork (Apple OS X)


type 2 description:
Microsoft Windows 7 registry key
It is used in Windows 7 much like REG format in previous  versions of Windows. It is a file that contains registry information.

You can simply add the registry entry with double clicking on the .key file. You can also view and read the content in any text editor.

Be careful when handling registry file, they might contain malicious code or otherwise corrupt your computer. Always be sure to install registry entries from reliable sources.

that open key files:
  • Microsoft Windows 7
  • NotePad


type 3 description:
ArcView geocoding matching keys
It is used by ESRI ArcView for a format that contain geocoding matching keys in ODB format. Probably some sort of specialized GIS file type.
  • ArcView (Microsoft Windows)
  • ENVI (Microsoft Windows)


 type 4 description:
Avira AntiVir Personal license key files
KEY file suffix is related to Avira AntiVir and used for a format that hold license data.
  • Avira AntiVir Personal (Microsoft Windows)


type 5 description:
BioWare Infinity and Aurora game engine resource
TIt is also used in Bioware’s Infinity and Aurora game engines for files that hold some resource data. Used in such successful titles as Baldur’s Gate or Neverwinter Nights.
  • Baldur’s Gate (Microsoft Windows)
  • Neverwinter Nights (Microsoft Windows)


type 6 description:
DataCAD custom toolbar 
It is also used by DataCAD 3D CAD software.

A *.key file used in this program contains customized toolbar that can be imported to the program. Old file format replaced by DTB format in latest versions of DataCAD.

  • DataCAD

(Microsoft Windows)


type 7 description:
Keyboard definition 
It is sometimes used for settings format that contains saved keyboard layouts, shortcuts, keybinds or other configuration data for keyboards. Such formats are frequently used in computer games.
  • Delta Force (Microsoft Windows)
  • Diablo II (Microsoft Windows)
  • SmartWare (Microsoft Windows)


type 8 description:
Licence or encrypted security files
It is frequently used by various programs for files that hold various encrypted data or keys, such as program licenses.

These 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 (keys) by security programs.

  • Avira AntiVir Personal (Microsoft Windows)
  • Avira AntiVir Premium (Microsoft Windows)
  • Avira Premium Security Suite (Microsoft Windows)
  • Estimator
  • Forecast Pro
  • Kaspersky Anti-Virus
  • Sentry 2020
  • Top Secret Crypto Gold
  • VMware Workstation


type 9 description:
OS/2 archive key files
It is associated with OS/2 operating system and used for archive key .
that open key suffix:
  • OS/2