DOCUMENT:Q64816  02-OCT-1999  [win95x]
TITLE   :Mouse Hangs with Mouse Loaded in Multiple Virtual Machines
PRODUCT :Microsoft Windows 95.x Retail Product
PROD/VER:WINDOWS:3.0,3.0a
OPER/SYS:
KEYWORDS:

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Windows versions 3.0, 3.0a 
-------------------------------------------------------------------------------

SYMPTOMS
========

If more than one virtual machine (VM) runs the Microsoft mouse driver in 386
enhanced mode, the mouse driver for the additional virtual machines returns
error messages. In some cases, when you return to Windows, the mouse stops
responding (hangs).

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

Steps to Reproduce Problem
--------------------------

1. Start Windows 3.0 in 386 enhanced mode without an MS-DOS-level driver present
   (that is, without MOUSE.SYS or MOUSE.COM).

2. In the Program Manager, start an MS-DOS command prompt. At the MS-DOS command
   prompt, "type mouse.com" (without the quotation marks) and press ENTER. The
   Microsoft mouse driver displays the message "Mouse driver installed."

3. Type "exit" (without the quotation marks) to return to Windows. Windows then
   sends a message to the MS-DOS screen about "Windows Pop-Up Program Support."

4. In the Program Manager, start an MS-DOS command prompt again. At the MS-DOS
   command prompt, run MOUSE.COM again (see step 2). The Microsoft Mouse driver
   displays the message "Driver not installed -- interrupt jumper missing."

5. Press ALT+TAB to return to Windows.

   The mouse is frozen.

6. Press ALT+TAB to return to the MS-DOS command prompt. Type "exit" (without
   the quotation marks).

   You can now use the mouse again.

7. Repeat steps 4-6.

   The mouse is frozen again.

STATUS
======

Microsoft has confirmed this to be a problem in Windows versions 3.0 and 3.0a.
We are researching this problem and will post new information here in the
Microsoft Knowledge Base as it becomes available.

Additional query words: vm freezes 3.00 3.0 3.0a 3.00a win30

======================================================================
Keywords          :  
Technology        : kbWin3xSearch kbZNotKeyword3 kbWin300 kbWin300a
Version           : WINDOWS:3.0,3.0a

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1999.