Opening a BLF File

The BLF file type is primarily associated with CLFS.

BLF	File extension: BLF
	File type:	base log

What is a BLF file?

BLF files mostly belong to CLFS by Microsoft. A BLF file is a base log created by the Common Log File System on Windows operating system. It contains metadata used to manage a physical log (a set of files and attributes for several logs). The Registry of a Windows machine, for example, saves changes made to a BLF log before they are written to the NTuser.dat file to prevent data corruption. Another type of BLF file is a texture applied to vehicles featured in Colin McRae Rally 2 car racing simulation video game. MasterWorks saves an embroidery design in a BLF file.

How to open a BLF file

You need a suitable software like CLFS to open a BLF file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your BLF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a BLF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online BLF Text Viewer

Choose your .blf file to analyze

or drag and drop it here

Online File Viewer

✈

Read our privacy guarantee in Filext’s terms and privacy policy

Please allow ads on our site

This helps us keep our servers running. Then re-upload your file to view it.

Click here to see how to disable the ad blocker for filext.com

Programs that open and convert BLF files:

CLFS by Microsoft
See the previous paragraphs to learn more about the main application. BLF files are often referred to as CLFS data files because this type of file is primarily created or used by this software.
Advanced Computer Architecture
The Advanced Computer Architecture uses a file that is named CARS.BLF.
Allegro CL (encrypted object store) by Franz
Allegro CL (short for Allegro Common Lisp) is a dynamic object-oriented programming environment for Common Lisp programming language. Its encrypted object store is saved in an OSTORE.BLF file. This file format is classified as Encoded.
BancTec Scanner (driver) by Kofax
BancTec is a family of high-volume production scanners. Their hardware driver is saved in a file with BBL filename extension. This file format is classified as System.
BIAevaluation (project) by Biacore
BIAevaluation is a discontinued software used for extensive kinetic, affinity, and concentration evaluation. It saves a project in a BLF file. This file format is classified as Data.
Defender (trojan) by Microsoft
Defender is a system antivirus and firewall software bundled with Windows operating system. It automatically detects and removes a BLF file containing Beast Trojan. This file format is classified as Executable. Related links: Manual Removal Instructions, Beast
DriveBlockEditor (function block data) by Rockwell Automation
DriveBlockEditor is a discontinued software environment used to program function blocks to be executed on motor control drive units. It saves function block information in a BLF file. This file format is classified as Developer.
Halo (game graphics) by Xbox Games Studio
Halo is a Sci-Fi video game series available for PC, mobile, and console platforms. It uses graphical data saved in a BLF file. This file format is classified as Game.
LBC (data) by LBC Developers
LBC short for Large Bitcoin Collider is a server/client software which searches for colliding Bitcoin-related private keys. It uses data saved in a BLF file. This file format is classified as Data.
Rally Online (car texture) by GameSpy
Rally Online is an obsolete car race simulation video game. Textures for cars in Rally Online are saved in a BLF file. This file format is classified as Game.
Telerate (workspace) by Telerate
Telerate is a discontinued financial data analysis software compatible with IBM PCs. It used some data saved in a BLF file. This file format is classified as Data.

BLF file format details:

The file format determines how the data is stored in the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. If there are problems opening a file, you must first determine the file format used. Below is our analysis of the BLF files:

BLF is one of the most common file extensions and predominantly uses a uniform format. The file formats most commonly found in BLF files are:

75% of all BLF files start with the magic bytes LOGG, which are always the first bytes of this file format. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The average file size is 2 MB with most files being between 43 KB and 18 MB in size. The file type is very recent. The files contain the following words: LOGG and LOBJ. These files can be linked to logging, trace, flash, data, canoe, error, issue, ethernet, triggerf, current, trigger, after, check, comm, fail and temp.
15% of all BLF files use the same file format, which have the signature 15 00 01 00 02 00 02 00. They consist of unreadable binary data. The files are 65 KB to 65 KB in size, with a median of 65 KB. A usual file name is $TxfLog.blf. Such files sometimes refer to ntuser, bcde, cced, software and class.

All other BLF files (10%) have no uniform format, often e.g. config and blf. Files like these are sometimes linked to nontrusted, only, nezha, hvac, mifi, application, cantrace, battery, vehicle, charge, drive, body, list, mode or time. Just click the "Choose your .blf file to analyze" button on this page to find out what your BLF file is.

Technical Data for BLF File Extension

File classification:

Data

Related files:

regtrans-ms, bfl, $tops, log2, drivers, zip, log1, log, dbc, sam, txt, ini, blt, dat, system, pluginpayloadattachment, exe, t32, xml, vi

a blf base log is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with BLF files

Associate the BLF file extension with the correct application.
Update your software that should actually open base logs. Because only the current version supports the latest BLF file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available CLFS update.
To make sure that your BLF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .BLF file online - secure, fast, and no downloads needed.