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Details of extension .bs_

On this page, we're going to take a closer look at the .bs_ file extension, which is related to Microsoft Bookshelf Find Menu Shell Extension.

We'll explain what exactly a .bs_ file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .bs_ files into different formats, we'll give you some tips on how to do that too.

Let's see the file format associated with this file extension!


  1. Microsoft Bookshelf Find Menu Shell Extension

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Microsoft Bookshelf Find Menu Shell Extension

bs_ file - Microsoft Bookshelf Find Menu Shell Extension
The BS_ file belongs to the Other category and works with Microsoft Bookshelf, being used as a Microsoft Bookshelf Find Menu Shell Extension. Microsoft Bookshelf is a multimedia reference collection with online books and materials. The developer no longer updates Microsoft Bookshelf and does not provide support anymore. Based on our current information, Microsoft Bookshelf does not use other file types.
Application: Microsoft Bookshelf
Program name: -
Category: Other files
Mime-type: application/octet-stream
Related extensions:
.z96 Microsoft Bookshelf 96 Update Package

The .bs_ file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .bs_ extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .bs_ file extension wrong?

In our database, we came across the following similar extensions:

.bs Infinity Engine Script
.sb_ Compressed Creative Labs Sound Blaster Instruments

The .bs_ extension is frequently misused

People sometimes confuse the .bs_ filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

bs (1), sb_ (1)

Having trouble opening a .bs_ file?

If you want to open a .bs_ file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .bs_ association can trigger this error.

Windows can't open this file:

File: example.bs_

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android