Microsoft KB Archive/242941

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Plug and Play Serial Devices Removed Temporarily During Printer Installation

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Q242941

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The information in this article applies to:


 * Microsoft Windows 95
 * Microsoft Windows 98
 * Microsoft Windows 98 Second Edition

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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/directory/overview.asp

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.

Additional query words: w95qfe

Keywords : kbhw win95 win98 win98se

Issue type : kbprb

Technology : kbWin95search kbWin98search kbWin98SEsearch kbWin95 kbWin98 kbWin98SE