JSI Tip 9505. Windows XP errors with 'Phone and Modem control panel can not be opened'?

Jerold Schulman

June 28, 2005

1 Min Read
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When you attempt to open the Phone and Modem Options tool in Control Panel, you receive:

Phone and Modem control panel can not be opened. You may have a problem starting telephony service.

This behavior will occur if the Telephony service is disabled.

To resolve this problem:

1. Open a CMD.EXE window.

2. Type the following command and press Enter:

REG ADD HKLMSYSTEMCurrentControlSetServicesTapiSrv /V Start /T REG_DWORD /F /D 3

3. Shutdown and restart your computer.



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