84,488,480 programs installed

Should I remove Prepar3D?

What percent of users and experts removed it?
2% remove it98% keep it
Overall Sentiment
What do people think about it?
Be the first to rate (click star to rate)
How common is it?
Global Rank #43,017
United States Rank #42,593
Reach 0.0021%


1.4.4747.0 87.80%
1.2.3253.0 12.20%



Prepar3D is a program developed by Lockheed Martin. The most used version is 1.4.4747.0, with over 98% of all installations currently using this version. The software installer includes 61 files and is usually about 17.5 MB (18,352,871 bytes). In comparison to the total number of users, most PCs are running the OS Windows 7 (SP1) as well as Windows 10. While about 46% of users of Prepar3D come from the United States, it is also popular in Italy and Netherlands.

Program detailsProgram details

URL: www.LockheedMartin.com
Installation folder: C:\Program Files\Lockheed Martin\Prepar3D\
Uninstaller: MsiExec.exe /I{EA150082-B0BE-4F8D-AFEB-2208604C0EAC}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 17.5 MB
Language: English (United States)

Program filesFiles installed by Prepar3D

  • facilities.dll - Lockheed Martin® Prepar3D® (facilities dll)
  • fsui.dll - fsui dll
  • language.dll - language dll
  • Prepar3D.exe - Lockheed Martin Prepar3D®
  • LockheedMartin.Controls.dll - Prepar3D.CommonControls (LockheedMartin.Controls)
  • LearningCenter.exe - LearningCenter
  • MenuSystem.dll - MenuSystem
  • MDLReader.dll - MDLReader (MDL Reader)
  • ConfigParser.dll - Prepar3D (Prepar3D.UI.ConfigParser)
  • Core.dll - Core
  • MenuModels.dll - Prepar3D.UI.MenuModels
  • LockheedMartin.Shaders.dll - Shaders (LockheedMartin.Shaders)
  • IP2Lib32.dll (by Concept Software) - Concept Software, Inc. Instant PLUS DLL (Instant PLUS DLL
  • icudt42.dll (by IBM and others) - International Components for Unicode (ICU Data DLL)
  • Awesomium.dll (by Khrona) - Awesomium v1.6.3
  • acontain.dll
  • ai_player.dll
  • api.dll
  • atc.dll
  • controls.dll
  • debug.dll
  • demo.dll
  • fe.dll
  • flight.dll
  • fs2000.exe
  • fs-traffic.dll
  • g2d.dll
  • g3d.dll
  • gps.dll
  • livingwater.dll
  • main.dll
  • menus.dll

How do I remove Prepar3D?

You can uninstall Prepar3D from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Prepar3D, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Prepar3D.

Win 7 (SP1) 68%
Win XP 2%
Uninstall it 2%
Keep it 98%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 75.61%
Windows 10 19.51%
Windows Vista 2.44%
Windows XP 2.44%
Which OS releases does it run on?
Windows 7 Home Premium 39.02%
Windows 7 Ultimate 21.95%
Windows 7 Professional 12.20%
Windows 8.1 Pro 7.32%
Windows 8 Pro 4.88%
Windows Vista Home Premiu... 2.44%

Distribution by countryGeography

45.83% of installs come from the United States
Which countries install it?
  United States 45.83%
  Italy 10.42%
  Netherlands 8.33%
  United Kingdom 6.25%
  Spain 4.17%
  Canada 4.17%
  Chile 2.08%
  Belgium 2.08%
  France 2.08%
  Norway 2.08%
  Australia 2.08%
  Greece 2.08%
  Portugal 2.08%
  Japan 2.08%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 26.92%
ASUS 19.23%
Dell 15.38%
Acer 11.54%
Intel 3.85%
Apple 3.85%
Alienware 3.85%
American Megatrends 3.85%
Common models
Shuttle Inc. SH67H 4.55%
MSI MS-7693 4.55%
Hewlett-Packard s5-1015uk 4.55%
HP ProBook 6360b 4.55%
HP Pavilion dv7 Notebook ... 4.55%

comments1 comment

user comment
user comment
Simmerguyover a year ago
This program is the continuation of Microsoft's old ESP commercial use simulation platform, most commonly seen in the entertainment form as Flight Simulator X, Service Pack 2. after Microsoft ceased development of their Flight Simulator product line, Lockheed Martin purchased the intellectual property rights (including source code) to the ESP platform, and has continued it's development as a professional (i.e. non-entertainment) training tool, primarily still as a flight simulation program, but also capable of other areas, such as undersea and land based operations.