alphabetical list of extensions

File extension .BK2

File description

The file BK2 is a system file. This file is called Windows Indexing Service Data File. The utility of this file is to construt an indexed catalogue and help in quick searching. The indexing service can be of text information or any kind of file properties. The indexing also supports multilingual features. It merges all the collected information about file in a catalogue which can be used later. The catalogue contains a master index file. This format is produced by Microsoft.

These files are also supported by Windows 7 and 8. This system files indexes information for performing system searches for files. it is often created in a folder C:/System Volume Information/catalog.wci which is basically used to perform file system search and storing data.

Description of the problem
If you have on your computer a .BK2 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 .BK2 extension. Directly on this website you can find a solution of the most common problem with the .BK2 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 .BK2 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.
System Files
File name: Windows Indexing Service Data File
Programs that will open this file:
Microsoft Windows Microsoft Windows
The .BK2 file extension can correspond to several not related file formats. If there is more than one file format with the .BK2 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 .BK2 file does not want to open

In addition to the problem described above, i.e. the lack of the appropriate application to support the .BK2 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 .BK2 file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .BK2 file, so download the update and check again.

2. Incorrect .BK2 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 .BK2 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.