batcmd.com Windows Vista Services

Telephony - Windows Vista Service

Provides Telephony API (TAPI) support for programs that control telephony devices on the local computer and, through the LAN, on servers that are also running the service.

This service also exists in Windows 10, 7, 8 and XP.

Startup Type

Windows Vista edition without SP SP1 SP2
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Default Properties

Display name:Telephony
Service name:TapiSrv
Type:share
Path:%WinDir%\System32\svchost.exe -k NetworkService
File:%WinDir%\System32\tapisrv.dll
Error control:normal
Object:NT AUTHORITY\NetworkService
Privileges:
  • SeAuditPrivilege
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege
  • SeIncreaseQuotaPrivilege
  • SeAssignPrimaryTokenPrivilege

Default Behavior

Telephony logs on as NT AUTHORITY\NetworkService and runs in a shared process of svchost.exe. If Telephony fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the TapiSrv service has failed to start. If you disable this service, then 3 other services will be unable to start (see the "Dependencies" section below).

Dependencies

Telephony won't start, if the following system components are stopped or disabled:

If the Telephony is stopped, the following services will not start and initialize:

Restore Default Startup Type for Telephony

Automated Restore

1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.

2. Save the RestoreTelephonyWindowsVista.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the tapisrv.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows Vista installation media.