The clif.sys file is the driver file used in the Kaspersky Lab anti-virus products software. Kaspersky Lab is a known developer of threat management systems and secure content and reported to be the leading global vendor of system security products. The company is also the leading provider of a wide range of software to repair known system conflicts. Klif.sys updates hardware drivers to prevent future errors. An existing klif.sys file in the local drive folder prior to requiring it might mean that the said klif.sys file is a Win32 virus. The legitimate klif.sys is located at C:\Windows\System32\drivers or contained in the subfolder of C:\Windows\System32. Klif.sys is a driver which is most likely an anti-rootkit scanner, since it belongs to Kaspersky’s range of product solutions. If not functioning properly, the software may conflict in some versions of Windows XP, resulting to the "blue screen" error. When this happens, installing a spyware or virus scanners is recommended.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. klif.sys. is used by Kaspersky Antivirus, If you shut down klif.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop klif.sys, permanently you need to uninstall the application that runs this process which in this case is Kaspersky Antivirus, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed klif.sys

A process usually a part of an installed application such as Kaspersky Antivirus, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if klif.sys. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that klif.sys, belongs to, in this case Kaspersky Antivirus