Microsoft KB Archive/210987

= RRAS Uses All Small Business Server Modem Sharing Ports =

Article ID: 210987

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft BackOffice Small Business Server 4.0
 * Microsoft BackOffice Small Business Server 4.0a
 * Microsoft BackOffice Small Business Server 4.5
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q210987



SYMPTOMS
When you try to access the modem pool on a BackOffice Small Business Server-based computer, you may receive the following error message:

The modem is being used by another Dial-Up Networking connection or another program. Disconnect the other connection or close the program, and then try again.

Also, fax and proxy services in Small Business Server (SBS) may not work.



CAUSE
This behavior can occur if a member server on the SBS domain is running the Routing and Remote Access service (RRAS). RRAS may capture all the ports in the modem pool, leaving no ports available to the clients.



RESOLUTION
To resolve this issue, configure RRAS not to include the Modem Sharing ports. Or, you can uninstall the Modem Sharing client from the server running RRAS.

Additional query words: smallbiz

Keywords: kbdialup kbenv kberrmsg kbprb KB210987

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