alphabetical list of extensions

File extension .KEYCHAIN

File description

Created by Apple Inc., Keychain is a password management system for Mac OS. It contains many different types of data from passwords to certificates and secure notes. It can also store a title and URL. However, passwords and secure notes are the only data that is encrypted. This keychain idea was initially created for Apple’s email system, PowerTalk. Once PowerTalk ended, Steve Jobs began using Keychain for the Mac operating systems. It is now included on all the latest versions of the Mac OS from Mac OS 9 to Mac OS X. 

Description of the problem
If you have on your computer a .KEYCHAIN file that you cannot open, you are in exactly the same situation as thousands of other people who have similar problems with this or any other unknown file.

There may be several reasons why you cannot open the file with .KEYCHAIN extension. Directly on this website you can find a solution of the most common problem with the .KEYCHAIN file – that you do not have on your computer the appropriate program to open the file.
From the list below, select the appropriate program, install it and double click on the icon of a file that did not want to open - the problem with the .KEYCHAIN file extension should be solved. However, if this does not happen, go back to the website to learn about other possible causes of the error, which have been described at the bottom of the website.
Data Files
File name: Mac OS X Keychain File
Programs that will open this file:
Mac OS
Mac OS
Apple Keychain Access Apple Keychain Access
Mac OS X Mac OS X
The .KEYCHAIN file extension can correspond to several not related file formats. If there is more than one file format with the .KEYCHAIN extension, you will probably find most of them at this website. Remember that you need to download a program to support a particular file type. So first look through the entire contents of the website to select a program to support just the file you have.

Other possible reasons why your .KEYCHAIN file does not want to open

In addition to the problem described above, i.e. the lack of the appropriate application to support the .KEYCHAIN file, there may be several reasons that cause problems with opening and operation of the data format:

1. Incorrect version of the installed application

A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .KEYCHAIN file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .KEYCHAIN file, so download the update and check again.

2. Incorrect .KEYCHAIN file association with the program

If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:

  • Right-click the .KEYCHAIN file
  • Go to the "Open with" - then "Choose default program ..."
  • Locate the appropriate application
  • Click "OK"

3. The file is corrupt

It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.