BK2 File Extension

BK2 file icon

Windows Indexing Service Data Format

What is a BK2 file?

Windows Indexing Service Data Format, identified by the BK2 extension, is a Backup Files type and includes 395 files.

Microsoft, the developer of the Windows Indexing Service Data Format (BK2), has released file format and 242 programs designed to handle them.

BK2 files are compatible with various operating systems, including Windows. There are 2 programs available to open a BK2 file, including popular tools like WordPerfect and WordPerfect Office.

Programs that support BK2 files

How to open a BK2 file?

If you are having trouble opening a BK2 file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

WordPerfect and WordPerfect Office are recognized as the most popular software solutions for dealing with BK2 files. To install the most up-to-date edition of WordPerfect, visit the official Corel website. You can download the build that works across all operating systems.

When you finish installing WordPerfect, the system will automatically launch BK2 files with it.

Set WordPerfect as your default BK2 viewer

Setting a default program by file type in Windows

  1. Right-click on your BK2 file and choose the "Open With" option. Then click "Choose another app" to continue the process;
  2. From the list of applications in the pop-up window, find and select WordPerfect as your desired application;
  3. Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening BK2 files.

Set default app to open files on Mac

  1. Right-click or Control + left-click on the desired BK2 file to open a menu of available actions;
  2. Select "Open in application" and click "Other";
  3. At the bottom of the window, you will see the "Enable" menu. It is already set to the default option, "Recommended Programs";
  4. Within this menu, select "All Programs" and then search for WordPerfect. Check the box next to "Always open in app" to make it the default program.

How to edit a BK2 file?

Editing BK2 files requires installing professional software that lets you open and edit backup files. Online editors have more limitations compared to dedicated Windows Indexing Service Data Format programs.

List of Top BK2 editors 2026

After analyzing the criteria, we have created a list of BK2 editors available for use.

BK2 Editor SoftwareDeveloperPlatformsOverall Rating
WordPerfectCorelWindows4.9 out of 5 (36 reviews)

Solving Common BK2 File Challenges

When facing challenges with BK2 files, simple adjustments in your software can often solve the problem. Find helpful troubleshooting guidance below.

Are there any techniques or tools available to repair a damaged BK2 file?

Launch WordPerfect and open the damaged BK2 file. Go to the menu and select the "Repair" option to repair the file. Allow the recovery process to complete, which will automatically repair the damaged backup files.

Are there any symptoms that my BK2 file is damaged?

Corrupted BK2 backup files may show the following signs:

  • Opening the file in WordPerfect or other programs causes them to hang or crash;
  • Error dialogs are displayed when interacting with the file;
  • Opening the file results in an error or a failed attempt;
  • Unexpected expansion of the total size of the BK2 file;
  • Editing the archive in WordPerfect is accompanied by slow performance or delays;

What factors contribute to WordPerfect crash?

The absence of software updates can cause WordPerfect to crash. It is recommended to install the latest available updates for Corel products.

A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.