Microsoft KB Archive/283412

= COM Port Missing from List of Available Ports When You Try to Install a New Modem =

Article ID: 283412

Article Last Modified on 12/1/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Professional x64 Edition

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This article was previously published under Q283412



SYMPTOMS
While you are using the Add Hardware Wizard to install a new modem, you may find that one of your COM ports is not in the list of available COM ports.



CAUSE
This behavior can occur if another program or service is holding that COM port open.



WORKAROUND
To work around this behavior, quit the program or service that is holding the COM port open, and then run the Add Hardware Wizard again.



STATUS
This behavior is by design.

Keywords: kbhardware kbnetwork kbprb KB283412

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