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Microsoft KB Archive/253477

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Knowledge Base

Cannot Dial Out Using Dial-Up Networking

Article ID: 253477

Article Last Modified on 1/27/2007


  • Microsoft Windows 98 Second Edition
  • Microsoft Windows Millennium Edition

This article was previously published under Q253477

If this article does not describe your hardware-related issue, please see the following Microsoft Web site to view more articles about hardware:


When you attempt to dial out using Dial-Up Networking, you may see either of the following error messages:

Dial tone not found.

Cannot open port in registry.


This behavior can occur if the following conditions are true:

  • A Rockwell Soft56k modem is installed in your computer.
  • The COM ports are configured to Disabled or Auto in the BIOS.


To resolve this issue, configure the COM ports to ON or choose specific resources in the BIOS. For information about how to do this, contact your hardware manufacturer.

Additional query words: HWMODTS HWPORTS

Keywords: kb3rdparty kberrmsg kbhardware kbnetwork kbprb KB253477