File Extension KEY

  • Full name
    Licence Or Encrypted Security Format
  • Developer
  • Popularity
Have you encountered a problem with a KEY file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a KEY file here. In the further part of this page we have added a list of programs that should open your KEY file. It is enough you choose a proper application for your operating system, download and install it.

What is KEY file?

Files with the extension KEY are used by numerous programs to store registration information or license keys. The files are mostly encrypted and the content depends on the generating program. These files are useless without the associated application. They are usually in the same directory as the software itself.

Programs which can open a KEY file

How to open file with KEY extension?

In order to open a file with KEY extension one of the following programs must be installed on user’s system. If a problem with opening KEY file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with KEY files, follow the instructions below.
Install Kaspersky Anti-Virus or other program from the list

Most often resolving problems with opening KEY files is very simple. Just install an appropriate program that supports such files. All of the listed programs support KEY files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of KEY files or offer file conversion options, but may not be capable of editing such files.

Set Kaspersky Anti-Virus as the default program for opening KEY files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate KEY files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Kaspersky Anti-Virus applications is not on the list, select "Browse" option in order to manually locate the directory where Kaspersky Anti-Virus has been installed.


Check the section that lists most common problems with KEY files

Sometimes problems with opening KEY files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • KEY files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open KEY files (should that be the case, please contact your system administrator or IT specialist)
  • KEY file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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