Kbldfltr - Windows 10 Service
Keyboard Lockdown Subsystem by Microsoft Corporation.
This service also exists in Windows 8.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | not exists | not exists | not exists | not exists |
| 1511 | not exists | not exists | not exists | not exists |
| 1607 | not exists | not exists | not exists | not exists |
| 1703 | not exists | not exists | not exists | not exists |
| 1709 | not exists | not exists | not exists | not exists |
| 1803 | not exists | not exists | not exists | not exists |
| 1809 | not exists | not exists | not exists | not exists |
| 1903 | not exists | not exists | not exists | not exists |
| 1909 | not exists | not exists | not exists | not exists |
| 2004 | not exists | not exists | not exists | not exists |
| 20H2 | not exists | not exists | not exists | not exists |
| 21H1 | not exists | Manual | Manual | Manual |
| 21H2 | not exists | Manual | Manual | Manual |
| 22H2 | not exists | Manual | Manual | Manual |
Default Properties
| Display name: | Kbldfltr |
| Service name: | kbldfltr |
| Type: | kernel |
| Path: | %WinDir%\system32\drivers\kbldfltr.sys |
| Error control: | normal |
| Group: | Extended Base |
Default Behavior
The Kbldfltr service is a kernel mode driver. If Kbldfltr fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the kbldfltr service has failed to start.
Restore Default Startup Type of Kbldfltr
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreKbldfltrWindows10.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 kbldfltr.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows 10 installation media.