LGM File Extension

LGM file icon

Microsoft Windows Application Log

What is a LGM file?

The LGM file extension is linked to Microsoft Windows Application Log and belongs to the Data Files category, which includes 6196 files.

With the creation of the Microsoft Windows Application Log (LGM), Microsoft introduced file format along with 242 programs built for their use.

LGM file support extends to various operating systems, including Windows. You can open a LGM file using one of 6 programs, for example Windows Notepad, Sublime Text and Notepad++.

How to open a LGM file?

The most common reason why a LGM file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.

When it comes to opening and working with LGM files, Windows Notepad, Sublime Text and Notepad++ are the top choices for users. If you want the most recent release of Windows Notepad, head over to the Microsoft site and download the version designed to run on all platforms.

After installing, your OS should instantly open LGM files with Windows Notepad.

Set Windows Notepad as the default LGM handler

Changing Default Programs in Windows

  1. Start by right-clicking on your LGM file and selecting the "Open With" option. From there, click "Choose another app" to continue;
  2. In the pop-up window, find and select the Windows Notepad application from the available options;
  3. Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening LGM files.

Choose an app to open a file on Mac

  1. Right click or use Control + left click on the desired LGM file to launch the file options menu;
  2. Select "Open in application" and click "Other";
  3. Look towards the bottom of the window, where you will find the "Enable" menu. "Recommended programs" will be the default selection;
  4. Choose "All Programs" in this menu and search for Windows Notepad. Check the box next to "Always open in app" to set it as the default option.

How to edit a LGM file?

To edit LGM files, it is essential to install software that supports not only viewing but also editing the data files. Online LGM editors provide limited functionality compared to full-featured software for Microsoft Windows Application Log.

Best LGM editors in 2026

Based on the specified criteria, here is a list of LGM editors that may fit your requirements.

LGM Editor SoftwareDeveloperPlatformsOverall Rating
PSPadJan FialaWindows4.7 out of 5 (41 review)
Notepad++Notepad++ TeamWindows4.6 out of 5 (37 reviews)
Sublime TextSublime HQ PtyWindows, Mac OS, Linux4.6 out of 5 (39 reviews)
Microsoft Windows MeMicrosoftWindows4.4 out of 5 (39 reviews)
Windows NotepadMicrosoftWindows4.2 out of 5 (37 reviews)
Atom-Windows, Mac OS, Linux4.1 out of 5 (36 reviews)

Effective solutions for LGM file problems

Problematic LGM files can usually be resolved by making small changes in your software. See the tips below to help fix common issues.

What Causes Windows Notepad to Crash Frequently?

Windows Notepad crashes can be attributed to outdated software. Make sure you have installed the latest updates for Microsoft products.

Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.

How can I restore a damaged LGM file?

Use a recovery program to open the damaged LGM file and navigate to the "Repair" menu item. Please be patient while the recovery process completes, which will automatically restore the damaged data files.

What are the signs that my LGM file is damaged?

Common indications of damaged LGM data files are:

  • Editing the archive in Microsoft Windows Me results in slow or unresponsive behavior;
  • The file causes Windows Notepad or other programs to hang or crash during operation;
  • Attempts to open the file result in errors or failed results;
  • Unexplained increase in LGM file size;
  • Working with the file triggers the display of error messages;