Bluetooth Handsfree Service (BthHFSrv) Defaults in Windows 10

Enables wireless Bluetooth headsets to run on your computer. If this service is stopped or disabled, then Bluetooth headsets will not function properly with this machine.

Default Settings

Startup type:Manual
Display name:Bluetooth Handsfree Service
Service name:BthHFSrv
Service type:share
Error control:normal
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\System32\svchost.exe -k LocalServiceAndNoImpersonation
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BthHFSrv
  • SeChangeNotifyPrivilege

Default Behavior

Bluetooth Handsfree Service is a Win32 service. In Windows 10 it is starting only if the user, an application or another service starts it. When the Bluetooth Handsfree Service is started, it is running as NT AUTHORITY\LocalService in a shared process of svchost.exe along with other services. If Bluetooth Handsfree Service fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the BthHFSrv service has failed to start due to the error.


Bluetooth Handsfree Service cannot be started under any conditions, if the Bluetooth Support Service is disabled.

Restore Default Startup Configuration for Bluetooth Handsfree Service

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_BthHFSrv_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The BthHFSrv service is using the BthHFSrv.dll file that is located in the %WinDir%\System32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.