Q131767: Flight Simulator Err Msg: Unable to Lock XMS Memory

Article: Q131767
Product(s): Microsoft Home Games
Version(s): 5.0,5.1
Operating System(s): 
Keyword(s): kbenv kberrmsg kbsetup kbimu
Last Modified: 07-MAY-2002

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The information in this article applies to:

- Microsoft Flight Simulator for MS-DOS, versions 5.0, 5.1 
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SYMPTOMS
========

When you start Microsoft Flight Simulator, you receive the following error
message:

  Unable to lock XMS memory

CAUSE
=====

Flight Simulator tries to lock XMS memory. Windows does not allow an application
to lock XMS memory.

RESOLUTION
==========

To resolve this error message, set the Use XMS Memory option in Flight Simulator
to No, as follows:

Windows 95/98
-------------

There are three potential solutions to this problem in Windows 95/98. The
solutions are listed below in order of preference.

Option 1:

1. Open your Flight Simulator 5.1 folder.

2. Double-click Setup.com. Follow the Setup steps.

3. When you reach the Sound Setup option, make sure the Use XMS Memory option is
  set to No.

4. Complete Setup and restart Flight Simulator.

Option 2:

1. Open the Flight Simulator 5.1 folder.

2. Double-click Fs5.ini to open the Fs5.ini file in Notepad. (If Fs5.ini does
  not automatically open in Notepad when you double-click Fs5.ini, choose
  Notepad from the Windows 95/98 "Open With" dialog box.)

3. In Fs5.ini, locate the line:

  SOUND_XMS=001

  -or-

  SOUND_XMS=1

4. Change the line to:

  SOUND_XMS=000

5. Save the changes and restart Flight Simulator.

Option 3:

1. Open the Flight Simulator 5.1 folder.

2. With the right mouse button, click Fs5.com.

3. Click Properties.

4. From the Fs5.com Properties screen, click the Memory tab.

5. On the Memory tab, set the Extended Memory option to Auto.

6. Restart Flight Simulator.

Windows 3.x
-----------

1. If you are using Windows 3.x, exit Windows, and from the Flight Simulator
  directory, type the following and press ENTER:

  setup

2. Follow the Setup steps. When you reach the Sound Setup option, change the Use
  XMS Memory option to No.

3. Complete Setup and restart Flight Simulator.

EDITING FS5.INI
---------------

If Flight Simulator does not allow you to use the steps above to physically
change the XMS setting, edit your Fs5.ini file as follows:

1. Find the line

  SOUND_XMS=001

  -or-

  SOUND_XMS=1

2. Change the line to:

  SOUND_XMS=000

MORE INFORMATION
================

Flight Simulator should now run without problems. If you continue to experience
problems running Flight Simulator, make sure you have enough expanded memory
available. Please refer to the Flight Simulator user's guide for more
information.

Additional query words: 5.00 5.00a 5.10 fltsim cannot memory fs51 flightsim can't can not

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Keywords          : kbenv kberrmsg kbsetup kbimu 
Technology        : kbGamesSearch kbFlightSimSearch kbFlightSim500DOS kbFlightSim510DOS kbSimSearch
Version           : :5.0,5.1
Issue type        : kbprb

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