"NETMODEM USE" Error on Windows 2000 Professional Modem Sharing Patch for Small Business Server 4.5

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This article was previously published under Q268903

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SYMPTOMS

After you install the Modem Sharing Service Patch for Windows 2000 Professional Client Machines, and then try to establish a connection to the Small Business Server 4.5's Modem Sharing service using a NETMODEM USE command, you may receive the following error on the Windows 2000 Professional client:

NETMODEM USE is not supported on a modem-sharing server.

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CAUSE

The Windows 2000 client computer should have the Serial Redirector (Serrdr.dll) installed. If this file failed to load into the %windir%\system32 directory, then the Windows 2000 Professional client computer fails to function as a modem-sharing client, generating the error shown in the "Symptoms" section of this article.

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RESOLUTION

To resolve this issue, copy the Serrdr.dll file into the %windir%\system32 directory. You can find this file in the directory into which you extracted the Modem Sharing Service Patch for Windows 2000 Professional client computers (W2kMpClnt.exe).

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