What is Klpf?

Klpf.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if Klpf.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for Klpf drivers in need of updating

Klpf.sys file information

The process known as klpf belongs to software KL klpf by KL (

Description: Klpf.sys is not essential for the Windows OS and causes relatively few problems. The Klpf.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 28,979 bytes (66% of all occurrences) or 25,139 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. There is no information about the author of the file. The program is not visible. The service has no detailed description. It is not a Windows core file. Klpf.sys appears to be a compressed file. Therefore the technical security rating is 49% dangerous; however you should also read the user reviews.

Recommended: Identify Klpf.sys related errors

Important: Some malware disguises itself as Klpf.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the Klpf.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

I installed Kaspersky AH and i got a blue screen error with this file in trouble
Kaspersky Labs Personal Firewall
  Wolfgang König   (further information)
Treiber von Kaspersky Anti - Hacker ( Kaspersky Personal Security Suite )
    (further information)
It's from Kaspersky, it can bring trouble with kaspersky 5l, but can be solved
  Martin van der Poel   (further information)
KLPF is from Kaspersky Anti-Hacker/Firewall
  Needs to be removed prior to installing different firewall  
in Verbindung mit Bluesreen

Rating chart

Summary: Average user rating of Klpf.sys: based on 7 votes with 6 user comments. 4 users think Klpf.sys is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. One user thinks Klpf.sys is dangerous and recommends removing it.

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Best practices for resolving Klpf issues

A clean and tidy computer is the key requirement for avoiding problems with Klpf. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the Klpf.sys process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

Klpf.sys [all]