Where is FSX CFG Located? A Guide to Finding the FSX Configuration File

In the world of flight simulation, FSX (Flight Simulator X) is a popular choice for enthusiasts looking to experience the thrill of flying. However, making changes to the game’s settings and configurations can be a challenge if you don’t know where to find the FSX configuration file. In this article, we will guide you through the process of locating this file, providing you with the knowledge needed to customize your FSX experience to your liking.

The FSX Configuration File: An Introduction To Its Purpose

The FSX Configuration File, also known as fsx.cfg, is a crucial component of the Microsoft Flight Simulator X (FSX) software. It serves as a settings file that contains various configurations for the game, including graphics settings, hardware options, and control assignments. This file is responsible for defining how FSX operates on your computer.

The fsx.cfg file plays a vital role in customizing the simulation experience to suit your preferences. With access to this file, users can adjust a wide range of settings, such as display resolution, scenery complexity, sound options, and more. It also allows for the optimization of the game’s performance, ensuring smooth gameplay on different system configurations.

To fully harness the capabilities of FSX and enhance your simulation experience, understanding the purpose and location of the fsx.cfg file becomes essential. In the following sections, we will explore how to locate this file on both Windows and Mac operating systems, as well as through the Steam version of FSX. So let’s dive in and uncover the secrets of the FSX configuration file!

Understanding The Importance Of The FSX Configuration File

The FSX Configuration File plays a crucial role in the functioning and customization of the Microsoft Flight Simulator X (FSX) game. This file, also known as fsx.cfg, holds various settings and parameters that control the performance, graphics, audio, and other aspects of the game.

By accessing and modifying this file, users can fine-tune FSX to suit their specific preferences and system capabilities. The configuration file allows users to optimize the game’s performance, adjust graphics settings, change control mappings, and even add custom scenery and aircraft.

Understanding the importance of the FSX Configuration File is vital for effectively managing the game and troubleshooting any issues that may arise. Whether you want to enhance visual quality, boost FPS, or eliminate glitches, having a solid grasp of the configuration file is essential.

In this article, we will explain how to locate the FSX Configuration File on different operating systems, including Windows and Mac. We will also guide you on how to safely edit and modify the file, common issues you may encounter, and best practices for backing up and restoring the configuration file.

Locating The FSX Configuration File On Windows Operating Systems

On Windows operating systems, finding the FSX configuration file is a straightforward process. Follow these steps to locate it:

1. Open the File Explorer by pressing the Windows key + E on your keyboard.
2. Navigate to the system partition where FSX is installed, typically the C: drive.
3. Double-click on the “Program Files (x86)” folder (or “Program Files” if you’re using a 32-bit version of Windows).
4. Scroll down and locate the folder named “Microsoft Games”.
5. Open the “Microsoft Games” folder and find the “Microsoft Flight Simulator X” folder.
6. Within the FSX folder, locate the file named “fsx.cfg”. This is the FSX configuration file.

Note: If you have the Steam version of FSX installed, the file may be located in a slightly different location. Instead of the “Microsoft Games” folder, you will find the “Steam” folder in your “Program Files” directory. Inside the “Steam” folder, navigate to “steamappscommonFSX”. The “fsx.cfg” file should be located there.

Locating the FSX configuration file is essential for editing and modifying various settings in the game. Understanding how to access this file allows you to customize your FSX experience and troubleshoot common issues effectively.

Finding The FSX Configuration File On Mac Operating Systems

Unlike Windows operating systems, locating the FSX configuration file on a Mac can be a bit more challenging. However, with the right guidance, you’ll be able to find it in no time. To locate the FSX configuration file on a Mac, follow these steps:

1. Open Finder and click on “Go” in the top menu bar.

2. Select “Go to Folder” from the drop-down menu.

3. In the dialog box that appears, type “~/Library/Application Support/Microsoft/FSX/” and click “Go”.

4. You should now see the FSX configuration file named “fsx.cfg”.

It’s important to note that the “~/Library” folder might be hidden by default on newer Mac operating systems. In such cases, you can reveal the Library folder by holding the “Option” key while clicking on the “Go” menu in Finder and selecting “Library”. This will make the Library folder visible in the drop-down menu, allowing you to access the Application Support folder and find the FSX configuration file.

Accessing The FSX Configuration File Via Steam Version Of FSX

The Steam version of FSX has gained popularity among flight simulation enthusiasts for its ease of installation and integration with the Steam platform. However, finding the configuration file can be a bit more complex compared to the standalone version.

To access the FSX configuration file in the Steam version, follow these steps:

1. Launch the Steam client on your computer and log in to your Steam account.
2. Navigate to your Steam Library and locate Microsoft Flight Simulator X: Steam Edition.
3. Right-click on the game’s name and select “Properties” from the drop-down menu.
4. In the Properties window, click on the “Local Files” tab.
5. Click on the “Browse Local Files” button. This will open the installation folder for FSX: Steam Edition.
6. Within the installation folder, you will find the “fsx.CFG” file. This file contains all the configuration settings for FSX.

By accessing the fsx.CFG file through these steps, you can make necessary modifications and adjustments to enhance your FSX experience. However, it is crucial to exercise caution while editing the file, as any incorrect changes may lead to issues or errors in the simulation program. Remember to always create a backup of the original configuration file before making any modifications.

Editing And Modifying The FSX Configuration File

The FSX configuration file is a crucial component that allows users to customize and enhance their flight simulator experience. By editing and modifying this file, users can optimize their settings, improve performance, and add new features to FSX. However, it’s essential to approach this process with caution and follow guidelines to avoid potential issues.

When considering editing the FSX configuration file, users need to understand the file structure and parameters. The configuration file, named “fsx.cfg,” is located in the main FSX folder. To access it, navigate to the installation directory, commonly found under “C:Program Files (x86)Microsoft GamesFlight Simulator X” on Windows.

It’s recommended to make a backup copy of the original fsx.cfg file before making any changes. This allows users to revert to the previous settings if any problems arise. To make modifications, users can open the file with a text editor like Notepad and locate various sections such as graphics, sound, and controls. Each section contains specific parameters that can be adjusted to fine-tune the simulator to personal preferences.

However, caution must be exercised when editing the FSX configuration file. Users should have a basic understanding of the settings they are altering and make changes incrementally, testing each modification to ensure stability. It’s also essential to consult online resources, forums, and tutorials to gain a more comprehensive understanding of the available options for customization.

Following these guidelines can help users effectively edit and modify the FSX configuration file, taking their flight simulator experience to new heights.

Common Issues And Errors With The FSX Configuration File

The FSX configuration file, also known as fsx.cfg, plays a crucial role in the smooth functioning of Microsoft Flight Simulator X. While editing and modifying this file can enhance your simulator experience, it can also lead to various issues and errors if not done correctly. Here are some common problems users encounter with the FSX configuration file:

1. Performance issues: Incorrect settings in the fsx.cfg file can lead to poor performance, such as low frame rates or sluggish gameplay. Users may experience choppy graphics, lag, or slow loading times.

2. Graphics glitches: Changing certain values within the configuration file, especially related to graphics options, may cause visual glitches like flickering textures, pixelation, or terrain rendering issues.

3. CTD (Crash To Desktop): Incorrect modifications to the fsx.cfg file often result in frequent crashes to the desktop during gameplay. These crashes can occur randomly or be triggered by specific in-game actions.

4. Controller malfunctions: Inaccurate configurations within the fsx.cfg file can cause issues with joystick, throttle, or other controller inputs. This can lead to unresponsive controls, button mapping problems, or calibration errors.

To avoid these issues, it is crucial to make backups of the original fsx.cfg file before making any modifications. Additionally, carefully follow tutorials or consult forums to ensure correct changes are made, and always test your modifications in a controlled manner to identify any potential problems before applying them permanently.

Backup And Restore: Best Practices For The FSX Configuration File

When it comes to dealing with the FSX Configuration File, it is crucial to prioritize the safety of your settings and avoid any potential mishaps. One of the best practices you should always follow is creating backups of your configuration file before making any modifications. This ensures that you have a copy of the original file in case something goes wrong during the editing process.

To back up your FSX Configuration File, simply locate the file and make a copy of it in a separate folder or directory. This way, if you accidentally delete or corrupt the original file, you can easily restore it to its original state by replacing it with the backed-up version.

Additionally, it is a good idea to keep a record of the changes you make to the configuration file. This can be done by creating a text document where you note down the modifications you have made and the reasons behind them. This documentation will prove to be immensely helpful in troubleshooting any issues that may arise.

By implementing these backup and restore best practices, you can rest assured that your FSX Configuration File remains safe and secure throughout the editing and modification process.


1. Where can I find the FSX CFG file on my computer?

To locate the FSX configuration file on your computer, you need to navigate to the installation directory of FSX. By default, this directory is typically found in “C:Program FilesMicrosoft GamesMicrosoft Flight Simulator X”. Within this installation folder, look for a file named “fsx.cfg”. This is the FSX configuration file that stores various settings and preferences for the simulator.

2. Is it possible to modify the FSX CFG file manually?

Yes, you can manually modify the FSX CFG file using a text editor like Notepad. However, exercise caution while making changes to the file, as any incorrect modifications can potentially cause issues with the simulator. It is recommended to backup the original CFG file before making any changes, and only modify the file if you have a good understanding of the settings and their implications.

3. Can I access the FSX CFG file from within the simulator?

No, you cannot access the FSX CFG file from within the simulator itself. To make changes to the configuration file, you need to exit the simulator and navigate to the installation directory as mentioned earlier. Once you have made the required modifications to the CFG file, save it and restart FSX for the changes to take effect.


In conclusion, locating the FSX Configuration File (CFG) is essential for modding or troubleshooting Microsoft Flight Simulator X. While the file’s location may vary depending on the operating system and user preferences, this guide has provided step-by-step instructions for finding it easily. By accessing the CFG file, users can customize various settings and enhance their gaming experience. Understanding the location of the CFG file lays the foundation for further exploration and optimization of FSX.

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