batcmd.com Windows 10 Services

Common Log (CLFS) - Windows 10 Service

General-purpose logging service.

This service also exists in Windows 7, 8 and Vista.

Startup Type

Windows 10 edition RTM 1511 1607
Home Boot Boot Boot
Pro Boot Boot Boot
Education Boot Boot Boot
Enterprise Boot Boot Boot

Default Properties

Display name:Common Log (CLFS)
Service name:CLFS
Type:kernel
Path:%WinDir%\System32\drivers\CLFS.sys
Error control:critical
Group:Filter

Default Behavior

The Common Log (CLFS) service is a kernel mode driver. If Common Log (CLFS) fails to load or initialize, the error is logged and the computer attempts to restart, using the Last Known Good configuration. If the Last Known Good configuration fails, Windows 10 startup also fails, and the boot process halts with a Stop error. If you disable this service, Windows 10 will fail to start. Do NOT change this service startup configuration if your computer is working.

Restore Default Startup Type for Common Log (CLFS)

Automated Restore

1. Select your Windows 10 edition and release, and then click on the Download button below.

2. Save the RestoreCommonLogCLFSWindows10.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 CLFS.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.