What is fsx.exe?

The genuine fsx.exe file is a software component of Microsoft Flight Simulator X by Microsoft.
The file is for a flight simulator game involving 'real-world' flight training. It's not classified as a substitute for formal pilot training from a certified flight instructor. The application has been developed by many team members, some who are real-world pilots and others who contribute for fun. The original version of the game was released in OCtober 2006 by Microsoft.

FSX stands for Flight Simulator X

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the fsx.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for fsx.exe related errors

Fsx.exe file information

Windows Task Manager with fsx
Fsx.exe process in Windows Task Manager

The process known as Microsoft Flight Simulator or ApexDC belongs to software Microsoft Flight Simulator X by Microsoft ( or ApexDC++ Development Team (

Description: Fsx.exe is not essential for the Windows OS and causes relatively few problems. The fsx.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 2,737,560 bytes (33% of all occurrences), 2,737,728 bytes or 2,744,384 bytes. 
The program has a visible window. The fsx.exe file is certified by a trustworthy company. It is not a Windows system file. The software can be uninstalled in the Control Panel. The application listens for or sends data on open ports to a LAN or the Internet. Therefore the technical security rating is 4% dangerous; however you should also read the user reviews.

Uninstalling this variant: The developer Microsoft provides a support site for assistance, and an uninstaller (Control Panel ⇒ Uninstall a Program ⇒ Microsoft Flight Simulator X: or Microsoft Flight Simulator X).

Recommended: Identify fsx.exe related errors

If fsx.exe is located in a subfolder of the user's profile folder, the security rating is 33% dangerous. The file size is 193,536 bytes (50% of all occurrences) or 2,744,384 bytes. It is not a Windows system file.

Uninstalling this variant: The developer Microsoft provides a support site for assistance, and an uninstaller (Control Panel ⇒ Uninstall a Program ⇒ Microsoft Flight Simulator X:).

Important: Some malware camouflages itself as fsx.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the fsx.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Die fsx.exe Datei gehört zum Flight Simulator X.
  FlusiJustin   (further information)
fsx.exe 10.0.61637.0 46fadb14 ntdll.dll 6.3.9600.17630 54b0d74f c0000005 0001f90d 19f4 01d04acb71a7809c C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\fsx.exe C:\WINDOWS\SYSTEM32\ntdll.dll a1a7c57a-b6c4-11e4-bed8-8851fb484a5c
  Andy JB19  

Summary: Average user rating of fsx.exe: based on 1 vote with 2 user comments. One user thinks it's probably harmless. One user is not sure about it.

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Best practices for resolving fsx issues

A clean and tidy computer is the key requirement for avoiding problems with fsx. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the fsx.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

fsx.exe [all]