Error Message: <Game> Caused An Invalid Page Fault In Module Winmm.dll


When you attempt to start one of the Microsoft games listed
at the beginning of this article, you may receive one of the following error
Combatfs caused an invalid page fault in module
Fltsim98 caused an invalid page fault
in module Winmm.dll.
Fs2000 caused an invalid
page fault in module Winmm.dll.
Empires2 caused
an invalid page fault in module Winmm.dll.
Game caused an invalid page fault in module Winmm.dll.
game is the program file of the game that you are attempting to

In addition, when you play Age of Empires II, one of the
following may occur.

When you launch the game you may get a brief
black screen and then the game will close and drop to the desktop,
When you try to view the properties of an .avi file by
right-clicking the file and then clicking Properties, you may receive the following error message:
EXPLORER caused an Invalid Page Fault in module


This issue may occur if either of the following conditions
are true:
  • The Winmm.dll file is missing or damaged.
  • You have a tsr installed on your computer that is
    conflicting with the Microsoft program listed at the beginning of this article
    that you are trying to run.


To resolve this issue, use the methods listed below in the
order presented. After each method test the game before proceeding to the next

Method 1: Extract a New Winmm.dll File

Extract a new copy of the Winmm.dll file from the original
Microsoft Windows installation CD-ROM or floppy disk to the following location:
where drive is the drive letter of the
hard disk on which Microsoft Windows is installed.

For additional
information about how to extract files from the Windows CD-ROM or Windows
floppy disk, click the following article number to view the article in the
Microsoft Knowledge Base:
129605 How to Extract Original Compressed Windows Files

Restart Your Computer By Using a Clean Boot Procedure

When you start Microsoft Windows, typically there are a number of
programs that start automatically and run in the background that may interfere
with the game. These programs may include antivirus and system utility
programs. When you perform a clean boot, you prevent these programs from
starting automatically. You must be logged on as an administrator or a member
of the Administrators group to complete this procedure. If your computer is
connected to a network, network policy settings may also prevent you from
completing this procedure.

To restart your computer by using a clean
boot procedure, follow these steps when you are using Windows XP.

Note You may experience a temporary loss of some services
functionality when you follow these steps. Restoring the settings restores the
functionality, but may result in the return of the original error message or
  1. Click Start, and then click
  2. In the Open box, type
    msconfig, and then click OK.
  3. On the General tab, click
    Selective Startup.
  4. Under Selective Startup, click to clear
    the following check boxes:
    • Process SYSTEM.INI File
    • Process WIN.INI File
    • Load Startup Items
  5. On the Services tab, click to select the
    Hide All Microsoft Services check box, and then click
    Disable All.
  6. Click OK, and then click
Click the Play button to view this streaming media demonstration.

additional information or to view steps for other operating systems, click the
following article number to view the article in the Microsoft Knowledge Base:
331796 Games: How to Perform a Clean Boot to Prevent Background Programs from
Interfering with Game Play


If the information in the "Resolution" section of this
article does not resolve this issue, see the following Knowledge Base article:
141801 Troubleshooting Audio and Video Codecs in Windows 95/98


Artikelnummer: 271753 – Letzte Überarbeitung: 14.02.2017 – Revision: 1

Microsoft Age of Empires II: The Age of Kings, Microsoft Age of Empires II: The Conqueror's Expansion, Microsoft Age of Empires II Gold Edition, Microsoft Combat Flight Simulator, Microsoft Combat Flight Simulator 2: WWII Pacific Theater, Microsoft Flight Simulator 2000 Standard Edition, Microsoft Flight Simulator 2000 Professional Edition