The File Extensions Database


.BLF File Extension

  • Developer by: Microsoft
  • Category: System Files
  • Format: Binary

What is an .BLF file?

.BLF is CLFS Base Log File

Log file created by the Common Log File System (CLFS), a Microsoft Windows component used for creating transaction logs; contains metadata that is used to manage access to the log data; can be created using the CLFS (API); used with "containers," which are associated files that hold the log data.

BLF files are commonly seen in the Windows user directory (C:\Users\[user]\). This is because the Windows component that writes user-level registry information to the NTUSER.DAT file in that directory uses CLFS logging. There may also be .REGTRANS-MS log container files in this directory, which store the log data. Another common location for BLF files is the following directory:C:\Windows\System32\SMI\Store\Machine\

Base log files are system files that are hidden by default in Windows. In general, you should not modify or delete them, since they can contain important user and system-level information, such as user passwords, account settings, and application settings.

NOTE: Because CLFS logs are used with transactions, they can potentially be left in an inconsistent state. This has been known to cause issues with Windows updates where BLF files are left in an inconsistent state. Consult the Windows support documentation to resolve this issue.

Programs that open CLFS Base Log File
Windows
Microsoft Common Log File System
File Type 2 MasterWorks Working File
Developer by: Designer's Gallery Category: Misc Files

Embroidery design file created by MasterWorks, a digitizing program used to create digital embroidery designs; stores shapes, colors, and outlines for the design; used for storing and editing a design before exporting it to a machine-compatible stitch file format.

BLF files provide greater flexibility when creating designs, since users can work at a higher level with shapes and outlines instead of at the lower machine-specific stitch and thread level. This non-destructive editing process enables the designer to export a stitch file at any time without causing any of the original design elements to be changed.

NOTE: Example export stitch formats include .PES and .DST file.

Programs that open MasterWorks Working File
Windows
Designer's Gallery MasterWorks

How to solve problems with BLF files

  • Associate the BLF file extension with the correct application. On :
    Windows: Right click on any BLF file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.BLF files". Mac: Right click (or Ctrl-click) the BLF file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .BLF is CLFS Base Log File. Because only the current version supports the latest BLF file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .BLF is CLFS Base Log File update.
  • To make sure that your BLF file is not corrupted or virus-infected, get the file again and scan it with antivirus software.