Telephony - Windows 11 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, Vista and XP.
Startup Type
| Windows 11 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
| 23H2 | Manual | Manual | Manual | Manual |
| 24H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | Telephony |
| Service name: | TapiSrv |
| Type: | share |
| Path: | %WinDir%\System32\svchost.exe -k NetworkService -p |
| File: | %WinDir%\System32\tapisrv.dll |
| Error control: | normal |
| Object: | NT AUTHORITY\NetworkService |
| Privileges: |
|
Default Behavior
The Telephony service is running as NT AUTHORITY\NetworkService in a shared process of svchost.exe. Other services might run in the same process. If Telephony fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the TapiSrv service has failed to start.
Dependencies
Telephony is unable to start, if the Remote Procedure Call (RPC) service is stopped or disabled.
If Telephony is stopped, the Fax service fails to start and initialize.
Restore Default Startup Type for Telephony
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreTelephonyWindows11.bat file to any folder on a local drive such as SSD or a hard disk.
3. Right-click the downloaded batch file and select Properties.
4. Check the Unblock checkbox and click OK.
5. Right-click the batch file again and select Run as administrator.
6. 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 11 installation media.