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Q242941: Plug and Play Serial Devices Removed During Printer Installation

Article: Q242941
Product(s): Microsoft Windows 95.x Retail Product
Version(s): 
Operating System(s): 
Keyword(s): kbhw win95 win98 win98se kbHardware
Last Modified: 08-MAY-2002

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

- Microsoft Windows 95 
- Microsoft Windows 98 
- Microsoft Windows 98 Second Edition 
-------------------------------------------------------------------------------

SYMPTOMS
========

If you have an active connection that is using a Plug and Play modem and you
complete an action (such as installing a printer) that re-enumerates the serial
devices, the modem becomes temporarily unavailable and your connection is
dropped. After the re-enumeration is complete, the modem reappears in Device
Manager and works normally.

CAUSE
=====

This behavior occurs because all child serial devices are removed and redetected
by Serenum.vxd when re-enumeration is triggered.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

The English-language version of this fix should have the following file
attributes or later:

  Date      Time       Version    Size     File name     Platform
  ---------------------------------------------------------------
  10/08/99  8:08:29pm  4.10.2222  20,228   Serenum.vxd   Windows 95
  10/08/99  8:08:29pm  4.10.2222  20,228   Serenum.vxd   Windows 98
  10/08/99  8:08:29pm  4.10.2222  20,228   Serenum.vxd   Windows 98
                                                         Second Edition



WORKAROUND
==========

To work around this problem, disconnect any Plug and Play modems before
reconfiguring devices.

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products that are
listed at the beginning of this article.

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

For additional information about Windows 98 and Windows 98 Second Edition
hotfixes, click the article number below to view the article in the Microsoft
Knowledge Base:

  Q206071 General Information About Windows 98 and Windows 98 Second Edition
  Hotfixes

For additional information about Windows 95 hotfixes, click the article number
below to view the article in the Microsoft Knowledge Base:

  Q161020 Implementing Windows 95 Updates

Additional query words: w95qfe

======================================================================
Keywords          : kbhw win95 win98 win98se kbHardware 
Technology        : kbWin95search kbWin98search kbWin98SEsearch kbZNotKeyword3 kbWin98 kbWin98SE
Version           : :
Issue type        : kbprb

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

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