Microsoft KB Archive/928899

= After you upgrade a Windows XP-based computer to Windows Vista, you may no longer hear the audio handshake when you use a dial-up modem =

Article ID: 928899

Article Last Modified on 3/15/2007

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APPLIES TO


 * Windows Vista Enterprise 64-bit edition
 * Windows Vista Home Basic 64-bit edition
 * Windows Vista Home Premium 64-bit edition
 * Windows Vista Ultimate 64-bit edition
 * Windows Vista Business
 * Windows Vista Business 64-bit edition
 * Windows Vista Enterprise
 * Windows Vista Home Basic
 * Windows Vista Home Premium
 * Windows Vista Starter
 * Windows Vista Ultimate

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SYMPTOMS
After you upgrade a Microsoft Windows XP-based computer to Windows Vista, you may no longer hear the audio handshake when you use a dial-up modem. However, the modem works and connects.



CAUSE
This problem occurs because certain modem drivers cannot stream audio to the computer audio device in Windows Vista. Therefore, you cannot hear the dial tone or the modem handshake.



RESOLUTION
This problem does not prevent the modem from working in Windows Vista. You may be able to re-enable this feature by contacting the OEM or the modem manufacturer for an updated Windows Vista-compatible modem driver.

Keywords: kbdriver kbmodem kbupgrade kbtshoot kbexpertisebeginner kbprb KB928899

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