Kbldfltr Service Defaults in Windows 8

Keyboard Lockdown Subsystem by Microsoft Corporation.

Default Settings

Startup type:
Windows 8 Core Windows 8N/A
Windows 8 Pro Windows 8N/A
Windows 8 Enterprise Windows 8N/A
Windows 8 Core Windows 8.1N/A
Windows 8.1 ProManual
Windows 8.1 EnterpriseManual
Windows 8 Core Windows 8.1 Update 1N/A
Windows 8.1 Update 1 ProManual
Windows 8.1 Update 1 EnterpriseManual
Display name:Kbldfltr
Service name:kbldfltr
Service type:kernel
Error control:normal
Group:Extended Base
Path:%SystemRoot%\system32\drivers\kbldfltr.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\kbldfltr

Default Behavior

The Kbldfltr service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If Kbldfltr fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the kbldfltr service hasn't been started.

Restore Default Startup Configuration for Kbldfltr

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_kbldfltr_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The kbldfltr service is using the kbldfltr.sys file that is located in the %WinDir%\system32\drivers folder. If the file is corrupted or deleted, you can put it back in there.