| File Extension: | BK2 |
| File Type Description: | Windows Indexing Service File |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Windows |
| Primary Software Developer: | Microsoft Corporation |
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Microsoft Corporation created the Windows Indexing Service File (BK2) file for the Microsoft Windows software series. Data from our web servers (annonymous users) show that BK2 files are most popular in United States and are often used by Windows 10. In most cases, these users are surfing the internet using the Google Chrome browser.
 | Microsoft Windows by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .FID | Microsoft Corporation | System Files | Windows Indexing Service File |
| .BK1 | Autodesk, Inc. | Backup Files | Autodesk Backup File |
| .B32 | Microsoft Corporation | Developer Files | MS-DOS BCC Data |
| ._VWDXSLN110 | Microsoft Corporation | Data Files | Microsoft Visual Studio File |
| .QDE | Microsoft Corporation | Executable Files | QDOS Executable |
| .LSF | Interscape | Data Files | Logos Library System File |
| .SPB | Samsung Electronics | Data Files | Samsung Kies Phonebook File |
| .QSS | Digia Oyj | Settings Files | Qt Style Sheet |
| .IPI | Microsoft Corporation | Executable Files | Microsoft Windows Installer Data |
| .REFERENCE | Budget In Brief | Data Files | Budget In Brief Reference File |
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