Microsoft KB Archive/293071

Knowledge Base

OL2002: "Modem Is Unavailable or Device Is in Use" Error Message During Background Synchronization

Article ID: 293071

Article Last Modified on 7/27/2006

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APPLIES TO

• Microsoft Outlook 2002 Standard Edition

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This article was previously published under Q293071

SYMPTOMS

When you configure Outlook 2002 offline to use a dial-up network (DUN) connection during a background synchronization, and then you connect by using another DUN connection, one of the following error messages appears when the background synchronization begins:

Modem is unavailable or device is in use.

Task 'Microsoft Exchange Server' reported error (0x80070279): 'The port is already in use or is not configured for Dial-Up Networking dial out.'

This behavior occurs while Outlook is set to use the existing dial-up connection.

WORKAROUND

To work around this behavior, before you start Outlook, connect by using the DUN connection that is configured for background synchronization:

1. On the Start menu, point to Programs, point to Accessories, and then click Dial-Up Networking.
2. Double-click the DUN connection that is configured to work with background synchronization.

STATUS

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

Keywords: kbbug kbnetwork kbpending KB293071

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