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

Support for Windows XP has ended

Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article was previously published under Q283412
This article has been archived. It is offered "as is" and will no longer be updated.
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.
This behavior can occur if another program or service is holding that COM port open.
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.
This behavior is by design.

Article ID: 283412 - Last Review: 12/05/2015 23:34:03 - Revision: 1.4

Microsoft Windows XP Home Edition, Microsoft Windows XP Professional, Microsoft Windows XP Professional x64 Edition

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