File Extension BLG

  • Full name
    Microsoft Windows Binary Performance Log Format
  • Developer
  • Popularity
Have you encountered a problem with a BLG file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a BLG file here. In the further part of this page we have added a list of programs that should open your BLG file. It is enough you choose a proper application for your operating system, download and install it.


BLG files are so-called Windows Binary Performance Log Files, which are binary log files that are created during the performance monitoring of a Windows system with the Windows System Monitor. Blg files include data on resource utilization and performance, such as memory (RAM) usage, hard disk and CPU used by various programs over a period of time.

BLG files are mainly used to analyze server and computer load to detect possible problems.

BLG files use a proprietary format, which can be converted to csv format with the command line relog. In addition, not all Windows versions use the same BLG format. Blg files can also be viewed with the performance monitoring of Windows. With Start -> Control Panel -> System and Security -> Administration -> Power Monitoring -> Power Monitoring (left) you get to the current power display. In the window to be opened with 'ctrl + L' you can find a log file in the tab 'Source'.

Programs which can open a BLG file

How to open a BLG file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the BLG file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a BLG file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support BLG files. At this point we are looking for disk space where the application was installed in and we can link it with a BLG file. Since then, our operating system will use the selected program to support all BLG files.

Other issues

Despite the described problem with BLG there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the BLG file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the BLG file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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